211100113020 has 48 divisors (see below), whose sum is σ = 607055466528. Its totient is φ = 54771920640.

The previous prime is 211100112973. The next prime is 211100113031. The reversal of 211100113020 is 20311001112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211100112987 and 211100113005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47542851 + ... + 47547290.

It is an arithmetic number, because the mean of its divisors is an integer number (12646988886).

Almost surely, 2^211100113020 is an apocalyptic number.

211100113020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211100113020 is an abundant number, since it is smaller than the sum of its proper divisors (395955353508).

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

211100113020 is a wasteful number, since it uses less digits than its factorization.

211100113020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95090190 (or 95090188 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 211100113020 its reverse (20311001112), we get a palindrome (231411114132).

The spelling of 211100113020 in words is "two hundred eleven billion, one hundred million, one hundred thirteen thousand, twenty".