221002120200 has 96 divisors (see below), whose sum is σ = 689643984960. Its totient is φ = 58543584000.

The previous prime is 221002120147. The next prime is 221002120217. The reversal of 221002120200 is 2021200122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1129059 + ... + 1310258.

It is an arithmetic number, because the mean of its divisors is an integer number (7183791510).

Almost surely, 2^221002120200 is an apocalyptic number.

221002120200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

221002120200 is an abundant number, since it is smaller than the sum of its proper divisors (468641864760).

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

221002120200 is a wasteful number, since it uses less digits than its factorization.

221002120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2439487 (or 2439478 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 221002120200 its reverse (2021200122), we get a palindrome (223023320322).

The spelling of 221002120200 in words is "two hundred twenty-one billion, two million, one hundred twenty thousand, two hundred".