20022200001988 has 12 divisors (see below), whose sum is σ = 35518834250620. Its totient is φ = 9873961644672.

The previous prime is 20022200001949. The next prime is 20022200002001. The reversal of 20022200001988 is 88910000222002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13859254731204 + 6162945270784 = 3722802^2 + 2482528^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34284588753 + ... + 34284589336.

Almost surely, 2^{20022200001988} is an apocalyptic number.

It is an amenable number.

20022200001988 is a deficient number, since it is larger than the sum of its proper divisors (15496634248632).

20022200001988 is a wasteful number, since it uses less digits than its factorization.

20022200001988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68569178166 (or 68569178164 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The spelling of 20022200001988 in words is "twenty trillion, twenty-two billion, two hundred million, one thousand, nine hundred eighty-eight".