20131310101220 has 24 divisors (see below), whose sum is σ = 42275947668864. Its totient is φ = 8052486620256.

The previous prime is 20131310101187. The next prime is 20131310101237. The reversal of 20131310101220 is 2210101313102.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2296757 + ... + 6748163.

It is an arithmetic number, because the mean of its divisors is an integer number (1761497819536).

Almost surely, 2^{20131310101220} is an apocalyptic number.

20131310101220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20131310101220 is an abundant number, since it is smaller than the sum of its proper divisors (22144637567644).

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

20131310101220 is a wasteful number, since it uses less digits than its factorization.

20131310101220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4677539 (or 4677537 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 20131310101220 its reverse (2210101313102), we get a palindrome (22341411414322).

The spelling of 20131310101220 in words is "twenty trillion, one hundred thirty-one billion, three hundred ten million, one hundred one thousand, two hundred twenty".