2111111110100 has 36 divisors (see below), whose sum is σ = 4585607023200. Its totient is φ = 843615704160.

The previous prime is 2111111110091. The next prime is 2111111110103. The reversal of 2111111110100 is 10111111112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111111110103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10256840 + ... + 10460639.

Almost surely, 2^{2111111110100} is an apocalyptic number.

2111111110100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111111110100 is an abundant number, since it is smaller than the sum of its proper divisors (2474495913100).

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

2111111110100 is a wasteful number, since it uses less digits than its factorization.

2111111110100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20718512 (or 20718505 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 11.

Adding to 2111111110100 its reverse (10111111112), we get a palindrome (2121222221212).

The spelling of 2111111110100 in words is "two trillion, one hundred eleven billion, one hundred eleven million, one hundred ten thousand, one hundred".