2001020011002 has 24 divisors (see below), whose sum is σ = 4441288318740. Its totient is φ = 650738214720.

The previous prime is 2001020010967. The next prime is 2001020011031. The reversal of 2001020011002 is 2001100201002.

It can be written as a sum of positive squares in 2 ways, for example, as 1999987095681 + 1032915321 = 1414209^2 + 32139^2 .

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, 1355703877 + ... + 1355705352.

Almost surely, 2^{2001020011002} is an apocalyptic number.

2001020011002 is an abundant number, since it is smaller than the sum of its proper divisors (2440268307738).

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

2001020011002 is a wasteful number, since it uses less digits than its factorization.

2001020011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2711409278 (or 2711409275 counting only the distinct ones).

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

Adding to 2001020011002 its reverse (2001100201002), we get a palindrome (4002120212004).

It can be divided in two parts, 200102001 and 1002, that multiplied together give a palindrome (200502205002).

The spelling of 2001020011002 in words is "two trillion, one billion, twenty million, eleven thousand, two".