222010222200021 has 20 divisors (see below), whose sum is σ = 343080930861900. Its totient is φ = 142903131529536.

The previous prime is 222010222200001. The next prime is 222010222200023. The reversal of 222010222200021 is 120002222010222.

222010222200021 is a `hidden beast` number, since 2 + 220 + 1 + 0 + 222 + 200 + 0 + 21 = 666.

222010222200021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 179724321576900 + 42285900623121 = 13406130^2 + 6502761^2 .

It is not a de Polignac number, because 222010222200021 - 2⁵ = 222010222199989 is a prime.

It is a super-2 number, since 2×222010222200021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 222010222199967 and 222010222200003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222010222200023) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47256324216 + ... + 47256328913.

It is an arithmetic number, because the mean of its divisors is an integer number (17154046543095).

Almost surely, 2^{222010222200021} is an apocalyptic number.

It is an amenable number.

222010222200021 is a deficient number, since it is larger than the sum of its proper divisors (121070708661879).

222010222200021 is an equidigital number, since it uses as much as digits as its factorization.

222010222200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94512653170 (or 94512653161 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 222010222200021 its reverse (120002222010222), we get a palindrome (342012444210243).

The spelling of 222010222200021 in words is "two hundred twenty-two trillion, ten billion, two hundred twenty-two million, two hundred thousand, twenty-one".