20131301132220 has 48 divisors (see below), whose sum is σ = 56386967501088. Its totient is φ = 5366506556160.

The previous prime is 20131301132219. The next prime is 20131301132221. The reversal of 20131301132220 is 2223110313102.

It is an interprime number because it is at equal distance from previous prime (20131301132219) and next prime (20131301132221).

It is a super-2 number, since 2×20131301132220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131301132221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57336411 + ... + 57686450.

It is an arithmetic number, because the mean of its divisors is an integer number (1174728489606).

Almost surely, 2^{20131301132220} is an apocalyptic number.

20131301132220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131301132220 is an abundant number, since it is smaller than the sum of its proper divisors (36255666368868).

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

20131301132220 is a wasteful number, since it uses less digits than its factorization.

20131301132220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115025790 (or 115025788 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 20131301132220 its reverse (2223110313102), we get a palindrome (22354411445322).

The spelling of 20131301132220 in words is "twenty trillion, one hundred thirty-one billion, three hundred one million, one hundred thirty-two thousand, two hundred twenty".