202221000001220 has 24 divisors (see below), whose sum is σ = 447014842108800. Its totient is φ = 76631115789792.

The previous prime is 202221000001171. The next prime is 202221000001261. The reversal of 202221000001220 is 22100000122202.

It is a junction number, because it is equal to n+sod(n) for n = 202221000001195 and 202221000001204.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266080262780 + ... + 266080263539.

It is an arithmetic number, because the mean of its divisors is an integer number (18625618421200).

Almost surely, 2^{202221000001220} is an apocalyptic number.

202221000001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202221000001220 is an abundant number, since it is smaller than the sum of its proper divisors (244793842107580).

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

202221000001220 is a wasteful number, since it uses less digits than its factorization.

202221000001220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532160526347 (or 532160526345 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 202221000001220 its reverse (22100000122202), we get a palindrome (224321000123422).

The spelling of 202221000001220 in words is "two hundred two trillion, two hundred twenty-one billion, one thousand, two hundred twenty".