121516120202 has 16 divisors (see below), whose sum is σ = 194245938432. Its totient is φ = 56879885040.

The previous prime is 121516120177. The next prime is 121516120211. The reversal of 121516120202 is 202021615121.

It is a Harshad number since it is a multiple of its sum of digits (23).

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, 28100549 + ... + 28104872.

It is an arithmetic number, because the mean of its divisors is an integer number (12140371152).

Almost surely, 2^121516120202 is an apocalyptic number.

121516120202 is a deficient number, since it is larger than the sum of its proper divisors (72729818230).

121516120202 is a wasteful number, since it uses less digits than its factorization.

121516120202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56205493.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 121516120202 its reverse (202021615121), we get a palindrome (323537735323).

The spelling of 121516120202 in words is "one hundred twenty-one billion, five hundred sixteen million, one hundred twenty thousand, two hundred two".