2221120211100 has 108 divisors (see below), whose sum is σ = 7475656074264. Its totient is φ = 507684616320.

The previous prime is 2221120211099. The next prime is 2221120211111. The reversal of 2221120211100 is 11120211222.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2221120211100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 75533607 + ... + 75563006.

Almost surely, 2^{2221120211100} is an apocalyptic number.

2221120211100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221120211100 is an abundant number, since it is smaller than the sum of its proper divisors (5254535863164).

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

2221120211100 is a wasteful number, since it uses less digits than its factorization.

2221120211100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151096644 (or 151096630 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 2221120211100 its reverse (11120211222), we get a palindrome (2232240422322).

The spelling of 2221120211100 in words is "two trillion, two hundred twenty-one billion, one hundred twenty million, two hundred eleven thousand, one hundred".