20020013221020 has 48 divisors (see below), whose sum is σ = 56058482235168. Its totient is φ = 5338437314560.

The previous prime is 20020013220971. The next prime is 20020013221057. The reversal of 20020013221020 is 2012231002002.

It is a happy number.

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

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, 5888289 + ... + 8643608.

It is an arithmetic number, because the mean of its divisors is an integer number (1167885046566).

Almost surely, 2^{20020013221020} is an apocalyptic number.

20020013221020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20020013221020 is an abundant number, since it is smaller than the sum of its proper divisors (36038469014148).

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

20020013221020 is a wasteful number, since it uses less digits than its factorization.

20020013221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14554870 (or 14554868 counting only the distinct ones).

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

Adding to 20020013221020 its reverse (2012231002002), we get a palindrome (22032244223022).

The spelling of 20020013221020 in words is "twenty trillion, twenty billion, thirteen million, two hundred twenty-one thousand, twenty".