12021021012122 has 64 divisors (see below), whose sum is σ = 19830357792000. Its totient is φ = 5442120069120.

The previous prime is 12021021012089. The next prime is 12021021012157. The reversal of 12021021012122 is 22121012012021.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 12021021012122.

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, 551437379 + ... + 551459177.

It is an arithmetic number, because the mean of its divisors is an integer number (309849340500).

Almost surely, 2^{12021021012122} is an apocalyptic number.

12021021012122 is a deficient number, since it is larger than the sum of its proper divisors (7809336779878).

12021021012122 is a wasteful number, since it uses less digits than its factorization.

12021021012122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27351.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 12021021012122 its reverse (22121012012021), we get a palindrome (34142033024143).

The spelling of 12021021012122 in words is "twelve trillion, twenty-one billion, twenty-one million, twelve thousand, one hundred twenty-two".