2120211111100 has 18 divisors (see below), whose sum is σ = 4600858111304. Its totient is φ = 848084444400.

The previous prime is 2120211111019. The next prime is 2120211111181. The reversal of 2120211111100 is 11111120212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2120211111019) and next prime (2120211111181).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10601055456 + ... + 10601055655.

Almost surely, 2^{2120211111100} is an apocalyptic number.

2120211111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2120211111100 is an abundant number, since it is smaller than the sum of its proper divisors (2480647000204).

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

2120211111100 is a wasteful number, since it uses less digits than its factorization.

2120211111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21202111125 (or 21202111118 counting only the distinct ones).

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

Adding to 2120211111100 its reverse (11111120212), we get a palindrome (2131322231312).

The spelling of 2120211111100 in words is "two trillion, one hundred twenty billion, two hundred eleven million, one hundred eleven thousand, one hundred".