202002001002 has 24 divisors (see below), whose sum is σ = 438645788100. Its totient is φ = 67184033280.

The previous prime is 202002000947. The next prime is 202002001043. The reversal of 202002001002 is 200100200202.

It can be written as a sum of positive squares in 2 ways, for example, as 199157805441 + 2844195561 = 446271^2 + 53331^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12488949 + ... + 12505112.

Almost surely, 2^202002001002 is an apocalyptic number.

202002001002 is an abundant number, since it is smaller than the sum of its proper divisors (236643787098).

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

202002001002 is a wasteful number, since it uses less digits than its factorization.

202002001002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24994518 (or 24994515 counting only the distinct ones).

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

Adding to 202002001002 its reverse (200100200202), we get a palindrome (402102201204).

It can be divided in two parts, 20200 and 2001002, that added together give a palindrome (2021202).

The spelling of 202002001002 in words is "two hundred two billion, two million, one thousand, two".