2221022100120 has 64 divisors (see below), whose sum is σ = 6663287322720. Its totient is φ = 592252913664.

The previous prime is 2221022100119. The next prime is 2221022100149. The reversal of 2221022100120 is 210012201222.

2221022100120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2221022100120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3524082 + ... + 4106238.

Almost surely, 2^{2221022100120} is an apocalyptic number.

2221022100120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221022100120 is an abundant number, since it is smaller than the sum of its proper divisors (4442265222600).

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

2221022100120 is a wasteful number, since it uses less digits than its factorization.

2221022100120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613964 (or 613960 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2221022100120 its reverse (210012201222), we get a palindrome (2431034301342).

The spelling of 2221022100120 in words is "two trillion, two hundred twenty-one billion, twenty-two million, one hundred thousand, one hundred twenty".