12121100020122 has 32 divisors (see below), whose sum is σ = 25518415372800. Its totient is φ = 3827669285808.

The previous prime is 12121100020033. The next prime is 12121100020147. The reversal of 12121100020122 is 22102000112121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9468843 + ... + 10672449.

It is an arithmetic number, because the mean of its divisors is an integer number (797450480400).

Almost surely, 2^{12121100020122} is an apocalyptic number.

12121100020122 is an abundant number, since it is smaller than the sum of its proper divisors (13397315352678).

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

12121100020122 is a wasteful number, since it uses less digits than its factorization.

12121100020122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1291970.

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

Adding to 12121100020122 its reverse (22102000112121), we get a palindrome (34223100132243).

The spelling of 12121100020122 in words is "twelve trillion, one hundred twenty-one billion, one hundred million, twenty thousand, one hundred twenty-two".