2111012211100 has 72 divisors (see below), whose sum is σ = 5092411092608. Its totient is φ = 754307078400.

The previous prime is 2111012211059. The next prime is 2111012211127. The reversal of 2111012211100 is 11122101112.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 26150919 + ... + 26231518.

Almost surely, 2^{2111012211100} is an apocalyptic number.

2111012211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111012211100 is an abundant number, since it is smaller than the sum of its proper divisors (2981398881508).

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

2111012211100 is a wasteful number, since it uses less digits than its factorization.

2111012211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52382495 (or 52382488 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2111012211100 its reverse (11122101112), we get a palindrome (2122134312212).

The spelling of 2111012211100 in words is "two trillion, one hundred eleven billion, twelve million, two hundred eleven thousand, one hundred".