1001021000202 has 24 divisors (see below), whose sum is σ = 2168941975200. Its totient is φ = 333663952680.

The previous prime is 1001021000183. The next prime is 1001021000263. The reversal of 1001021000202 is 2020001201001.

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 (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 159952 + ... + 1423947.

It is an arithmetic number, because the mean of its divisors is an integer number (90372582300).

Almost surely, 2^{1001021000202} is an apocalyptic number.

1001021000202 is an abundant number, since it is smaller than the sum of its proper divisors (1167920974998).

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

1001021000202 is a wasteful number, since it uses less digits than its factorization.

1001021000202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1619018 (or 1619015 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 1001021000202 its reverse (2020001201001), we get a palindrome (3021022201203).

The spelling of 1001021000202 in words is "one trillion, one billion, twenty-one million, two hundred two", and thus it is an aban number.