1001020001202 has 48 divisors (see below), whose sum is σ = 2379783428568. Its totient is φ = 302194713600.

The previous prime is 1001020001171. The next prime is 1001020001209. The reversal of 1001020001202 is 2021000201001.

It can be written as a sum of positive squares in 4 ways, for example, as 747828882441 + 253191118761 = 864771^2 + 503181^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1001020001209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40344799 + ... + 40369602.

Almost surely, 2^{1001020001202} is an apocalyptic number.

1001020001202 is an abundant number, since it is smaller than the sum of its proper divisors (1378763427366).

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

1001020001202 is a wasteful number, since it uses less digits than its factorization.

1001020001202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80714475 (or 80714472 counting only the distinct ones).

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

Adding to 1001020001202 its reverse (2021000201001), we get a palindrome (3022020202203).

The spelling of 1001020001202 in words is "one trillion, one billion, twenty million, one thousand, two hundred two".