121222122102 has 16 divisors (see below), whose sum is σ = 269382493680. Its totient is φ = 40407374016.

The previous prime is 121222122079. The next prime is 121222122137. The reversal of 121222122102 is 201221222121.

It is a happy number.

121222122102 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 1122427003 + ... + 1122427110.

It is an arithmetic number, because the mean of its divisors is an integer number (16836405855).

Almost surely, 2^121222122102 is an apocalyptic number.

121222122102 is an abundant number, since it is smaller than the sum of its proper divisors (148160371578).

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

121222122102 is a wasteful number, since it uses less digits than its factorization.

121222122102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244854124 (or 2244854118 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 121222122102 its reverse (201221222121), we get a palindrome (322443344223).

The spelling of 121222122102 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-two thousand, one hundred two".