210021201012120 has 64 divisors (see below), whose sum is σ = 641951595565920. Its totient is φ = 54948943156224.

The previous prime is 210021201012101. The next prime is 210021201012137. The reversal of 210021201012120 is 21210102120012.

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 210021201012120.

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, 16511094349 + ... + 16511107068.

Almost surely, 2^{210021201012120} is an apocalyptic number.

210021201012120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210021201012120 is an abundant number, since it is smaller than the sum of its proper divisors (431930394553800).

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

210021201012120 is a wasteful number, since it uses less digits than its factorization.

210021201012120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33022201484 (or 33022201480 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210021201012120 its reverse (21210102120012), we get a palindrome (231231303132132).

The spelling of 210021201012120 in words is "two hundred ten trillion, twenty-one billion, two hundred one million, twelve thousand, one hundred twenty".