20110911102 has 24 divisors (see below), whose sum is σ = 43609143240. Its totient is φ = 6698175120.

The previous prime is 20110911083. The next prime is 20110911127. The reversal of 20110911102 is 20111901102.

It is a happy number.

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 (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 432424 + ... + 476667.

It is an arithmetic number, because the mean of its divisors is an integer number (1817047635).

Almost surely, 2^20110911102 is an apocalyptic number.

20110911102 is an abundant number, since it is smaller than the sum of its proper divisors (23498232138).

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

20110911102 is a wasteful number, since it uses less digits than its factorization.

20110911102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910328 (or 910325 counting only the distinct ones).

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

The spelling of 20110911102 in words is "twenty billion, one hundred ten million, nine hundred eleven thousand, one hundred two".