202001221221220 has 24 divisors (see below), whose sum is σ = 424208529892224. Its totient is φ = 80799352235616.

The previous prime is 202001221221203. The next prime is 202001221221259. The reversal of 202001221221220 is 22122122100202.

202001221221220 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 2×202001221221220² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69557292 + ... + 72403171.

It is an arithmetic number, because the mean of its divisors is an integer number (17675355412176).

Almost surely, 2^{202001221221220} is an apocalyptic number.

202001221221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202001221221220 is an abundant number, since it is smaller than the sum of its proper divisors (222207308671004).

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

202001221221220 is a wasteful number, since it uses less digits than its factorization.

202001221221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142031619 (or 142031617 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 202001221221220 its reverse (22122122100202), we get a palindrome (224123343321422).

The spelling of 202001221221220 in words is "two hundred two trillion, one billion, two hundred twenty-one million, two hundred twenty-one thousand, two hundred twenty".