20020120102221 has 8 divisors (see below), whose sum is σ = 26693517570720. Its totient is φ = 13346734684272.

The previous prime is 20020120102181. The next prime is 20020120102231. The reversal of 20020120102221 is 12220102102002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20020120102221 - 2¹¹ = 20020120100173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20020120102221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20020120102231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2106475 + ... + 6669143.

It is an arithmetic number, because the mean of its divisors is an integer number (3336689696340).

Almost surely, 2^{20020120102221} is an apocalyptic number.

It is an amenable number.

20020120102221 is a deficient number, since it is larger than the sum of its proper divisors (6673397468499).

20020120102221 is a wasteful number, since it uses less digits than its factorization.

20020120102221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6025275.

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

Adding to 20020120102221 its reverse (12220102102002), we get a palindrome (32240222204223).

The spelling of 20020120102221 in words is "twenty trillion, twenty billion, one hundred twenty million, one hundred two thousand, two hundred twenty-one".