1001002012002 has 24 divisors (see below), whose sum is σ = 2193206659020. Its totient is φ = 329918265600.

The previous prime is 1001002011983. The next prime is 1001002012013. The reversal of 1001002012002 is 2002102001001.

It can be written as a sum of positive squares in 2 ways, for example, as 989131691601 + 11870320401 = 994551^2 + 108951^2 .

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 11 ways as a sum of consecutive naturals, for example, 312420999 + ... + 312424202.

Almost surely, 2^{1001002012002} is an apocalyptic number.

1001002012002 is an abundant number, since it is smaller than the sum of its proper divisors (1192204647018).

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

1001002012002 is a wasteful number, since it uses less digits than its factorization.

1001002012002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624845298 (or 624845295 counting only the distinct ones).

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

Adding to 1001002012002 its reverse (2002102001001), we get a palindrome (3003104013003).

The spelling of 1001002012002 in words is "one trillion, one billion, two million, twelve thousand, two".