121020202320 has 80 divisors (see below), whose sum is σ = 375317763840. Its totient is φ = 32258708992.

The previous prime is 121020202319. The next prime is 121020202337. The reversal of 121020202320 is 23202020121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 121020202320.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484246 + ... + 690314.

It is an arithmetic number, because the mean of its divisors is an integer number (4691472048).

Almost surely, 2^121020202320 is an apocalyptic number.

121020202320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020202320 is an abundant number, since it is smaller than the sum of its proper divisors (254297561520).

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

121020202320 is a wasteful number, since it uses less digits than its factorization.

121020202320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208532 (or 208526 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 121020202320 its reverse (23202020121), we get a palindrome (144222222441).

The spelling of 121020202320 in words is "one hundred twenty-one billion, twenty million, two hundred two thousand, three hundred twenty".