210222222020 has 24 divisors (see below), whose sum is σ = 467435294424. Its totient is φ = 79142483456.

The previous prime is 210222221977. The next prime is 210222222043. The reversal of 210222222020 is 20222222012.

It can be written as a sum of positive squares in 4 ways, for example, as 61892483524 + 148329738496 = 248782^2 + 385136^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 210222222020.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309149987 + ... + 309150666.

It is an arithmetic number, because the mean of its divisors is an integer number (19476470601).

Almost surely, 2^210222222020 is an apocalyptic number.

210222222020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210222222020 is an abundant number, since it is smaller than the sum of its proper divisors (257213072404).

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

210222222020 is a wasteful number, since it uses less digits than its factorization.

210222222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618300679 (or 618300677 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

Adding to 210222222020 its reverse (20222222012), we get a palindrome (230444444032).

The spelling of 210222222020 in words is "two hundred ten billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty".