2111320031100 has 432 divisors, whose sum is σ = 7513282869120. Its totient is φ = 455160384000.

The previous prime is 2111320031089. The next prime is 2111320031141. The reversal of 2111320031100 is 11300231112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2111320031100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 63384450 + ... + 63417750.

Almost surely, 2^{2111320031100} is an apocalyptic number.

2111320031100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111320031100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3756641434560).

2111320031100 is an abundant number, since it is smaller than the sum of its proper divisors (5401962838020).

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

2111320031100 is a wasteful number, since it uses less digits than its factorization.

2111320031100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33578 (or 33564 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2111320031100 its reverse (11300231112), we get a palindrome (2122620262212).

The spelling of 2111320031100 in words is "two trillion, one hundred eleven billion, three hundred twenty million, thirty-one thousand, one hundred".