20112021103131 has 12 divisors (see below), whose sum is σ = 29459861898480. Its totient is φ = 13219168799760.

The previous prime is 20112021103103. The next prime is 20112021103189. The reversal of 20112021103131 is 13130112021102.

20112021103131 is a `hidden beast` number, since 20 + 1 + 120 + 211 + 0 + 313 + 1 = 666.

It is not a de Polignac number, because 20112021103131 - 2⁵ = 20112021103099 is a prime.

It is a super-2 number, since 2×20112021103131² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20112021103231) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 15737105076 + ... + 15737106353.

It is an arithmetic number, because the mean of its divisors is an integer number (2454988491540).

Almost surely, 2^{20112021103131} is an apocalyptic number.

20112021103131 is a deficient number, since it is larger than the sum of its proper divisors (9347840795349).

20112021103131 is a wasteful number, since it uses less digits than its factorization.

20112021103131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31474211506 (or 31474211503 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 20112021103131 its reverse (13130112021102), we get a palindrome (33242133124233).

The spelling of 20112021103131 in words is "twenty trillion, one hundred twelve billion, twenty-one million, one hundred three thousand, one hundred thirty-one".