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12121022122 = 2111393963709
BaseRepresentation
bin10110100100111100…
…00001111010101010
31011021201211201111021
423102132001322222
5144310440201442
65322431323054
7606240662626
oct132236017252
934251751437
1012121022122
115160001360
12242338048a
1311b2258a51
1482db22186
154ae1c8e67
hex2d2781eaa

12121022122 has 16 divisors (see below), whose sum is σ = 19977098400. Its totient is φ = 5469917040.

The previous prime is 12121022119. The next prime is 12121022131. The reversal of 12121022122 is 22122012121.

It is a happy number.

12121022122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 12121022096 and 12121022105.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1978797 + ... + 1984912.

It is an arithmetic number, because the mean of its divisors is an integer number (1248568650).

Almost surely, 212121022122 is an apocalyptic number.

12121022122 is a deficient number, since it is larger than the sum of its proper divisors (7856076278).

12121022122 is a wasteful number, since it uses less digits than its factorization.

12121022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3963861.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 12121022122 its reverse (22122012121), we get a palindrome (34243034243).

The spelling of 12121022122 in words is "twelve billion, one hundred twenty-one million, twenty-two thousand, one hundred twenty-two".

Divisors: 1 2 11 22 139 278 1529 3058 3963709 7927418 43600799 87201598 550955551 1101911102 6060511061 12121022122