202221002221100 has 18 divisors (see below), whose sum is σ = 438819574820004. Its totient is φ = 80888400888400.

The previous prime is 202221002221037. The next prime is 202221002221109. The reversal of 202221002221100 is 1122200122202.

It is a happy number.

It is a super-2 number, since 2×202221002221100² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (202221002221109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1011105011006 + ... + 1011105011205.

It is an arithmetic number, because the mean of its divisors is an integer number (24378865267778).

Almost surely, 2^{202221002221100} is an apocalyptic number.

202221002221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221002221100 is an abundant number, since it is smaller than the sum of its proper divisors (236598572598904).

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

202221002221100 is a wasteful number, since it uses less digits than its factorization.

202221002221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2022210022225 (or 2022210022218 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 202221002221100 its reverse (1122200122202), we get a palindrome (203343202343302).

The spelling of 202221002221100 in words is "two hundred two trillion, two hundred twenty-one billion, two million, two hundred twenty-one thousand, one hundred".