20102112113031 has 64 divisors (see below), whose sum is σ = 32857299632640. Its totient is φ = 12067592129280.

The previous prime is 20102112112961. The next prime is 20102112113033. The reversal of 20102112113031 is 13031121120102.

It is not a de Polignac number, because 20102112113031 - 2¹⁵ = 20102112080263 is a prime.

It is a super-2 number, since 2×20102112113031² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20102112112995 and 20102112113013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102112113033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154249560 + ... + 154379826.

It is an arithmetic number, because the mean of its divisors is an integer number (513395306760).

Almost surely, 2^{20102112113031} is an apocalyptic number.

20102112113031 is a deficient number, since it is larger than the sum of its proper divisors (12755187519609).

20102112113031 is a wasteful number, since it uses less digits than its factorization.

20102112113031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141053 (or 141047 counting only the distinct ones).

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

Adding to 20102112113031 its reverse (13031121120102), we get a palindrome (33133233233133).

The spelling of 20102112113031 in words is "twenty trillion, one hundred two billion, one hundred twelve million, one hundred thirteen thousand, thirty-one".