121211013122 has 16 divisors (see below), whose sum is σ = 185695511040. Its totient is φ = 59312656128.

The previous prime is 121211013113. The next prime is 121211013139. The reversal of 121211013122 is 221310112121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121211013122.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2734754 + ... + 2778722.

It is an arithmetic number, because the mean of its divisors is an integer number (11605969440).

Almost surely, 2^121211013122 is an apocalyptic number.

121211013122 is a deficient number, since it is larger than the sum of its proper divisors (64484497918).

121211013122 is a wasteful number, since it uses less digits than its factorization.

121211013122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73345.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121211013122 its reverse (221310112121), we get a palindrome (342521125243).

The spelling of 121211013122 in words is "one hundred twenty-one billion, two hundred eleven million, thirteen thousand, one hundred twenty-two".