1000202221200 has 240 divisors, whose sum is σ = 3943361803136. Its totient is φ = 211031654400.

The previous prime is 1000202221169. The next prime is 1000202221247. The reversal of 1000202221200 is 21222020001.

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 4470481 + ... + 4688880.

Almost surely, 2^{1000202221200} is an apocalyptic number.

1000202221200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000202221200 is an abundant number, since it is smaller than the sum of its proper divisors (2943159581936).

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

1000202221200 is a wasteful number, since it uses less digits than its factorization.

1000202221200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159402 (or 9159391 counting only the distinct ones).

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

Adding to 1000202221200 its reverse (21222020001), we get a palindrome (1021424241201).

The spelling of 1000202221200 in words is "one trillion, two hundred two million, two hundred twenty-one thousand, two hundred".