13130121020 has 24 divisors (see below), whose sum is σ = 29195211024. Its totient is φ = 4943104256.

The previous prime is 13130120987. The next prime is 13130121023. The reversal of 13130121020 is 2012103131.

It is a junction number, because it is equal to n+sod(n) for n = 13130120986 and 13130121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13130121023) 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, 19308662 + ... + 19309341.

It is an arithmetic number, because the mean of its divisors is an integer number (1216467126).

Almost surely, 2^13130121020 is an apocalyptic number.

13130121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13130121020 is an abundant number, since it is smaller than the sum of its proper divisors (16065090004).

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

13130121020 is a wasteful number, since it uses less digits than its factorization.

13130121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38618029 (or 38618027 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 13130121020 its reverse (2012103131), we get a palindrome (15142224151).

The spelling of 13130121020 in words is "thirteen billion, one hundred thirty million, one hundred twenty-one thousand, twenty".