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13123122001 = 11173789101211
BaseRepresentation
bin11000011100011001…
…01111001101010001
31020212120110200002121
430032030233031101
5203334004401001
610010110014241
7643126460623
oct141614571521
936776420077
1013123122001
115624729880
122662aa7381
131311a4c962
148c6c58c13
1551c1726a1
hex30e32f351

13123122001 has 64 divisors (see below), whose sum is σ = 15974081280. Its totient is φ = 10644480000.

The previous prime is 13123121941. The next prime is 13123122011. The reversal of 13123122001 is 10022132131.

13123122001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13123122001 - 29 = 13123121489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13123122011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 62194786 + ... + 62194996.

It is an arithmetic number, because the mean of its divisors is an integer number (249595020).

Almost surely, 213123122001 is an apocalyptic number.

13123122001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13123122001 is a deficient number, since it is larger than the sum of its proper divisors (2850959279).

13123122001 is a wasteful number, since it uses less digits than its factorization.

13123122001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 13123122001 its reverse (10022132131), we get a palindrome (23145254132).

It can be divided in two parts, 131 and 23122001, that added together give a palindrome (23122132).

The spelling of 13123122001 in words is "thirteen billion, one hundred twenty-three million, one hundred twenty-two thousand, one".

Divisors: 1 11 17 37 89 101 187 211 407 629 979 1111 1513 1717 2321 3293 3587 3737 6919 7807 8989 16643 18779 18887 21311 36223 39457 41107 55981 63529 85877 98879 132719 152813 206569 234421 319243 332593 362287 615791 694823 698819 788507 1459909 1680943 1896679 3511673 3658523 3985157 5654081 7643053 8673577 11811991 13404619 20863469 32243543 62194891 70177123 129931901 147450809 354678973 771948353 1193011091 13123122001