13121020003020 has 96 divisors (see below), whose sum is σ = 39040399113408. Its totient is φ = 3281230159872.

The previous prime is 13121020003019. The next prime is 13121020003073. The reversal of 13121020003020 is 2030002012131.

It is a super-2 number, since 2×13121020003020² (a number of 27 digits) contains 22 as substring.

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

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, 22937217 + ... + 23502296.

It is an arithmetic number, because the mean of its divisors is an integer number (406670824098).

Almost surely, 2^{13121020003020} is an apocalyptic number.

13121020003020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13121020003020 is an abundant number, since it is smaller than the sum of its proper divisors (25919379110388).

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

13121020003020 is a wasteful number, since it uses less digits than its factorization.

13121020003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46439819 (or 46439817 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 13121020003020 its reverse (2030002012131), we get a palindrome (15151022015151).

The spelling of 13121020003020 in words is "thirteen trillion, one hundred twenty-one billion, twenty million, three thousand, twenty".