20113111131102 has 24 divisors (see below), whose sum is σ = 47540080855800. Its totient is φ = 6094882160880.

The previous prime is 20113111131089. The next prime is 20113111131131.

20113111131102 is a `hidden beast` number, since 20 + 11 + 311 + 11 + 311 + 0 + 2 = 666.

20113111131102 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 50790684477 + ... + 50790684872.

It is an arithmetic number, because the mean of its divisors is an integer number (1980836702325).

Almost surely, 2^{20113111131102} is an apocalyptic number.

20113111131102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20113111131102 is an abundant number, since it is smaller than the sum of its proper divisors (27426969724698).

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

20113111131102 is a wasteful number, since it uses less digits than its factorization.

20113111131102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101581369368 (or 101581369365 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

It can be divided in two parts, 2011311 and 1131102, that added together give a palindrome (3142413).

The spelling of 20113111131102 in words is "twenty trillion, one hundred thirteen billion, one hundred eleven million, one hundred thirty-one thousand, one hundred two".