22000020120 has 128 divisors (see below), whose sum is σ = 78974481600. Its totient is φ = 5415386112.

The previous prime is 22000020109. The next prime is 22000020131. The reversal of 22000020120 is 2102000022.

It is an interprime number because it is at equal distance from previous prime (22000020109) and next prime (22000020131).

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 769437 + ... + 797516.

Almost surely, 2^22000020120 is an apocalyptic number.

22000020120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22000020120 is an abundant number, since it is smaller than the sum of its proper divisors (56974461480).

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

22000020120 is a wasteful number, since it uses less digits than its factorization.

22000020120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1566986 (or 1566976 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 22000020120 its reverse (2102000022), we get a palindrome (24102020142).

The spelling of 22000020120 in words is "twenty-two billion, twenty thousand, one hundred twenty".