121020202102 has 16 divisors (see below), whose sum is σ = 182320884720. Its totient is φ = 60247128352.

The previous prime is 121020202033. The next prime is 121020202103. The reversal of 121020202102 is 201202020121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020202103) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 299868 + ... + 576160.

It is an arithmetic number, because the mean of its divisors is an integer number (11395055295).

Almost surely, 2^121020202102 is an apocalyptic number.

121020202102 is a deficient number, since it is larger than the sum of its proper divisors (61300682618).

121020202102 is a wasteful number, since it uses less digits than its factorization.

121020202102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277247.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 121020202102 its reverse (201202020121), we get a palindrome (322222222223).

The spelling of 121020202102 in words is "one hundred twenty-one billion, twenty million, two hundred two thousand, one hundred two".