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121301102231 = 179877977191
BaseRepresentation
bin111000011111000011…
…0111110111010010111
3102121002200102110012222
41300332012332322113
53441411040232411
6131420331332555
711522645233241
oct1607606767227
9377080373188
10121301102231
1147497345521
121b6135b115b
13b591919c4a
145c2a073091
15324e3124db
hex1c3e1bee97

121301102231 has 8 divisors (see below), whose sum is σ = 121994236800. Its totient is φ = 120608139960.

The previous prime is 121301102207. The next prime is 121301102243. The reversal of 121301102231 is 132201103121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-121301102231 is a prime.

It is a super-2 number, since 2×1213011022312 (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121301102261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1532846 + ... + 1610036.

It is an arithmetic number, because the mean of its divisors is an integer number (15249279600).

Almost surely, 2121301102231 is an apocalyptic number.

121301102231 is a deficient number, since it is larger than the sum of its proper divisors (693134569).

121301102231 is an equidigital number, since it uses as much as digits as its factorization.

121301102231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86149.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 121301102231 its reverse (132201103121), we get a palindrome (253502205352).

The spelling of 121301102231 in words is "one hundred twenty-one billion, three hundred one million, one hundred two thousand, two hundred thirty-one".

Divisors: 1 179 8779 77191 1571441 13817189 677659789 121301102231