20120203320131 has 4 divisors (see below), whose sum is σ = 20120714374752. Its totient is φ = 20119692265512.

The previous prime is 20120203320127. The next prime is 20120203320157. The reversal of 20120203320131 is 13102330202102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20120203320131 - 2² = 20120203320127 is a prime.

It is a super-2 number, since 2×20120203320131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20120203620131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255468251 + ... + 255546996.

It is an arithmetic number, because the mean of its divisors is an integer number (5030178593688).

Almost surely, 2^{20120203320131} is an apocalyptic number.

20120203320131 is a deficient number, since it is larger than the sum of its proper divisors (511054621).

20120203320131 is an equidigital number, since it uses as much as digits as its factorization.

20120203320131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511054620.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20120203320131 its reverse (13102330202102), we get a palindrome (33222533522233).

The spelling of 20120203320131 in words is "twenty trillion, one hundred twenty billion, two hundred three million, three hundred twenty thousand, one hundred thirty-one".