210221012002220 has 24 divisors (see below), whose sum is σ = 441534680705664. Its totient is φ = 84074965657856.

The previous prime is 210221012002189. The next prime is 210221012002237. The reversal of 210221012002220 is 22200210122012.

It is a happy number.

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, 839818172 + ... + 840068451.

It is an arithmetic number, because the mean of its divisors is an integer number (18397278362736).

Almost surely, 2^{210221012002220} is an apocalyptic number.

210221012002220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210221012002220 is an abundant number, since it is smaller than the sum of its proper divisors (231313668703444).

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

210221012002220 is a wasteful number, since it uses less digits than its factorization.

210221012002220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1679892889 (or 1679892887 counting only the distinct ones).

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

Adding to 210221012002220 its reverse (22200210122012), we get a palindrome (232421222124232).

The spelling of 210221012002220 in words is "two hundred ten trillion, two hundred twenty-one billion, twelve million, two thousand, two hundred twenty".