2220121120100 has 36 divisors (see below), whose sum is σ = 5188252282164. Its totient is φ = 819737028480.

The previous prime is 2220121120079. The next prime is 2220121120141. The reversal of 2220121120100 is 10211210222.

It can be written as a sum of positive squares in 6 ways, for example, as 1576407616 + 2218544712484 = 39704^2 + 1489478^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 853891439 + ... + 853894038.

It is an arithmetic number, because the mean of its divisors is an integer number (144118118949).

Almost surely, 2^{2220121120100} is an apocalyptic number.

2220121120100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2220121120100 is an abundant number, since it is smaller than the sum of its proper divisors (2968131162064).

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

2220121120100 is a wasteful number, since it uses less digits than its factorization.

2220121120100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707785504 (or 1707785497 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2220121120100 its reverse (10211210222), we get a palindrome (2230332330322).

The spelling of 2220121120100 in words is "two trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty thousand, one hundred".