20013000013020 has 96 divisors (see below), whose sum is σ = 64943594505216. Its totient is φ = 4509971827200.

The previous prime is 20013000013001. The next prime is 20013000013087. The reversal of 20013000013020 is 2031000031002.

It is a happy number.

It is a super-2 number, since 2×20013000013020² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 20013000012987 and 20013000013005.

It is a congruent number.

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, 335533561 + ... + 335593200.

It is an arithmetic number, because the mean of its divisors is an integer number (676495776096).

Almost surely, 2^{20013000013020} is an apocalyptic number.

20013000013020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20013000013020 is an abundant number, since it is smaller than the sum of its proper divisors (44930594492196).

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

20013000013020 is a wasteful number, since it uses less digits than its factorization.

20013000013020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671126851 (or 671126849 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

Adding to 20013000013020 its reverse (2031000031002), we get a palindrome (22044000044022).

The spelling of 20013000013020 in words is "twenty trillion, thirteen billion, thirteen thousand, twenty".