2111211100120 has 32 divisors (see below), whose sum is σ = 4750764404400. Its totient is φ = 844388541568.

The previous prime is 2111211100109. The next prime is 2111211100171. The reversal of 2111211100120 is 210011121112.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2111211100120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2639659 + ... + 3345178.

Almost surely, 2^{2111211100120} is an apocalyptic number.

2111211100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2111211100120 is an abundant number, since it is smaller than the sum of its proper divisors (2639553304280).

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

2111211100120 is a wasteful number, since it uses less digits than its factorization.

2111211100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5993667 (or 5993663 counting only the distinct ones).

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

Adding to 2111211100120 its reverse (210011121112), we get a palindrome (2321222221232).

The spelling of 2111211100120 in words is "two trillion, one hundred eleven billion, two hundred eleven million, one hundred thousand, one hundred twenty".