210222200020 has 72 divisors (see below), whose sum is σ = 531251247240. Its totient is φ = 69590787840.

The previous prime is 210222200017. The next prime is 210222200029. The reversal of 210222200020 is 20002222012.

It can be written as a sum of positive squares in 4 ways, for example, as 65394764176 + 144827435844 = 255724^2 + 380562^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210222200029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3670071 + ... + 3726910.

It is an arithmetic number, because the mean of its divisors is an integer number (7378489545).

Almost surely, 2^210222200020 is an apocalyptic number.

210222200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210222200020 is an abundant number, since it is smaller than the sum of its proper divisors (321029047220).

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

210222200020 is a wasteful number, since it uses less digits than its factorization.

210222200020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7397033 (or 7397024 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 210222200020 its reverse (20002222012), we get a palindrome (230224422032).

The spelling of 210222200020 in words is "two hundred ten billion, two hundred twenty-two million, two hundred thousand, twenty".