20020021012124 has 48 divisors (see below), whose sum is σ = 41176200441600. Its totient is φ = 8339814443136.

The previous prime is 20020021012111. The next prime is 20020021012177. The reversal of 20020021012124 is 42121012002002.

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, 67935314 + ... + 68229369.

It is an arithmetic number, because the mean of its divisors is an integer number (857837509200).

Almost surely, 2^{20020021012124} is an apocalyptic number.

It is an amenable number.

20020021012124 is an abundant number, since it is smaller than the sum of its proper divisors (21156179429476).

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

20020021012124 is a wasteful number, since it uses less digits than its factorization.

20020021012124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136164842 (or 136164840 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20020021012124 its reverse (42121012002002), we get a palindrome (62141033014126).

The spelling of 20020021012124 in words is "twenty trillion, twenty billion, twenty-one million, twelve thousand, one hundred twenty-four".