20210021022120 has 128 divisors (see below), whose sum is σ = 60788884060800. Its totient is φ = 5375224267776.

The previous prime is 20210021022083. The next prime is 20210021022173. The reversal of 20210021022120 is 2122012001202.

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 20210021022120.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 757796146 + ... + 757822814.

It is an arithmetic number, because the mean of its divisors is an integer number (474913156725).

Almost surely, 2^{20210021022120} is an apocalyptic number.

20210021022120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210021022120 is an abundant number, since it is smaller than the sum of its proper divisors (40578863038680).

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

20210021022120 is a wasteful number, since it uses less digits than its factorization.

20210021022120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42987 (or 42983 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20210021022120 its reverse (2122012001202), we get a palindrome (22332033023322).

The spelling of 20210021022120 in words is "twenty trillion, two hundred ten billion, twenty-one million, twenty-two thousand, one hundred twenty".