2221101121100 has 18 divisors (see below), whose sum is σ = 4819789433004. Its totient is φ = 888440448400.

The previous prime is 2221101121087. The next prime is 2221101121117. The reversal of 2221101121100 is 11211011222.

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, 11105505506 + ... + 11105505705.

Almost surely, 2^{2221101121100} is an apocalyptic number.

2221101121100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221101121100 is an abundant number, since it is smaller than the sum of its proper divisors (2598688311904).

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

2221101121100 is a wasteful number, since it uses less digits than its factorization.

2221101121100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22211011225 (or 22211011218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 2221101121100 its reverse (11211011222), we get a palindrome (2232312132322).

The spelling of 2221101121100 in words is "two trillion, two hundred twenty-one billion, one hundred one million, one hundred twenty-one thousand, one hundred".