12121012122 has 64 divisors (see below), whose sum is σ = 25161131520. Its totient is φ = 3890073600.

The previous prime is 12121012091. The next prime is 12121012139. The reversal of 12121012122 is 22121012121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7532454 + ... + 7534062.

It is an arithmetic number, because the mean of its divisors is an integer number (393142680).

Almost surely, 2^12121012122 is an apocalyptic number.

12121012122 is an abundant number, since it is smaller than the sum of its proper divisors (13040119398).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121012122 is a wasteful number, since it uses less digits than its factorization.

12121012122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2039.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 12121012122 its reverse (22121012121), we get a palindrome (34242024243).

Subtracting 12121012122 from its reverse (22121012121), we obtain a palindrome (9999999999).

The spelling of 12121012122 in words is "twelve billion, one hundred twenty-one million, twelve thousand, one hundred twenty-two".