20000022222120 has 64 divisors (see below), whose sum is σ = 60895590073920. Its totient is φ = 5253737178624.

The previous prime is 20000022222043. The next prime is 20000022222149. The reversal of 20000022222120 is 2122222000002.

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 20000022222120.

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, 1243774437 + ... + 1243790516.

It is an arithmetic number, because the mean of its divisors is an integer number (951493594905).

Almost surely, 2^{20000022222120} is an apocalyptic number.

20000022222120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20000022222120 is an abundant number, since it is smaller than the sum of its proper divisors (40895567851800).

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

20000022222120 is a wasteful number, since it uses less digits than its factorization.

20000022222120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2487565034 (or 2487565030 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

Adding to 20000022222120 its reverse (2122222000002), we get a palindrome (22122244222122).

The spelling of 20000022222120 in words is "twenty trillion, twenty-two million, two hundred twenty-two thousand, one hundred twenty".