221002100210020 has 48 divisors (see below), whose sum is σ = 465981054638400. Its totient is φ = 88043425808000.

The previous prime is 221002100209997. The next prime is 221002100210069. The reversal of 221002100210020 is 20012001200122.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83938146 + ... + 86531014.

It is an arithmetic number, because the mean of its divisors is an integer number (9707938638300).

Almost surely, 2^{221002100210020} is an apocalyptic number.

221002100210020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002100210020 is an abundant number, since it is smaller than the sum of its proper divisors (244978954428380).

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

221002100210020 is a wasteful number, since it uses less digits than its factorization.

221002100210020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2610108 (or 2610106 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 221002100210020 its reverse (20012001200122), we get a palindrome (241014101410142).

The spelling of 221002100210020 in words is "two hundred twenty-one trillion, two billion, one hundred million, two hundred ten thousand, twenty".