121111122102 has 16 divisors (see below), whose sum is σ = 242253419760. Its totient is φ = 40365178112.

The previous prime is 121111122079. The next prime is 121111122113. The reversal of 121111122102 is 201221111121.

It is a happy number.

It is a congruent number.

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, 1248327 + ... + 1341842.

It is an arithmetic number, because the mean of its divisors is an integer number (15140838735).

Almost surely, 2^121111122102 is an apocalyptic number.

121111122102 is an abundant number, since it is smaller than the sum of its proper divisors (121142297658).

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

121111122102 is a wasteful number, since it uses less digits than its factorization.

121111122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2597967.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121111122102 its reverse (201221111121), we get a palindrome (322332233223).

The spelling of 121111122102 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, one hundred two".