202002021000 has 192 divisors, whose sum is σ = 735287782320. Its totient is φ = 49723545600.

The previous prime is 202002020993. The next prime is 202002021019. The reversal of 202002021000 is 120200202.

It can be written as a sum of positive squares in 8 ways, for example, as 18614236356 + 183387784644 = 136434^2 + 428238^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

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, 746257 + ... + 980256.

Almost surely, 2^202002021000 is an apocalyptic number.

202002021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202002021000 is an abundant number, since it is smaller than the sum of its proper divisors (533285761320).

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

202002021000 is a wasteful number, since it uses less digits than its factorization.

202002021000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1726553 (or 1726536 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 202002021000 its reverse (120200202), we get a palindrome (202122221202).

The spelling of 202002021000 in words is "two hundred two billion, two million, twenty-one thousand".