2221100031100 has 72 divisors (see below), whose sum is σ = 4975665564800. Its totient is φ = 859711276800.

The previous prime is 2221100031097. The next prime is 2221100031109. The reversal of 2221100031100 is 11300011222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221100031109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55745986 + ... + 55785814.

Almost surely, 2^{2221100031100} is an apocalyptic number.

2221100031100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221100031100 is an abundant number, since it is smaller than the sum of its proper divisors (2754565533700).

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

2221100031100 is a wasteful number, since it uses less digits than its factorization.

2221100031100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57863 (or 57856 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 2221100031100 its reverse (11300011222), we get a palindrome (2232400042322).

The spelling of 2221100031100 in words is "two trillion, two hundred twenty-one billion, one hundred million, thirty-one thousand, one hundred".