2122221111100 has 18 divisors (see below), whose sum is σ = 4605219811304. Its totient is φ = 848888444400.

The previous prime is 2122221111097. The next prime is 2122221111137. The reversal of 2122221111100 is 11111222212.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10611105456 + ... + 10611105655.

Almost surely, 2^{2122221111100} is an apocalyptic number.

2122221111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122221111100 is an abundant number, since it is smaller than the sum of its proper divisors (2482998700204).

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

2122221111100 is a wasteful number, since it uses less digits than its factorization.

2122221111100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21222211125 (or 21222211118 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 2122221111100 its reverse (11111222212), we get a palindrome (2133332333312).

The spelling of 2122221111100 in words is "two trillion, one hundred twenty-two billion, two hundred twenty-one million, one hundred eleven thousand, one hundred".