202221021212220 has 96 divisors (see below), whose sum is σ = 573597726750720. Its totient is φ = 53223360053760.

The previous prime is 202221021212183. The next prime is 202221021212267. The reversal of 202221021212220 is 22212120122202.

202221021212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×202221021212220² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4981704 + ... + 20718576.

It is an arithmetic number, because the mean of its divisors is an integer number (5974976320320).

Almost surely, 2^{202221021212220} is an apocalyptic number.

202221021212220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202221021212220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286798863375360).

202221021212220 is an abundant number, since it is smaller than the sum of its proper divisors (371376705538500).

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

202221021212220 is a wasteful number, since it uses less digits than its factorization.

202221021212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15739675 (or 15739673 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 202221021212220 its reverse (22212120122202), we get a palindrome (224433141334422).

The spelling of 202221021212220 in words is "two hundred two trillion, two hundred twenty-one billion, twenty-one million, two hundred twelve thousand, two hundred twenty".