1012001020002 has 24 divisors (see below), whose sum is σ = 2505907287936. Its totient is φ = 289143148536.

The previous prime is 1012001019923. The next prime is 1012001020021. The reversal of 1012001020002 is 2000201002101.

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 (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4015876938 + ... + 4015877189.

It is an arithmetic number, because the mean of its divisors is an integer number (104412803664).

Almost surely, 2^{1012001020002} is an apocalyptic number.

1012001020002 is an abundant number, since it is smaller than the sum of its proper divisors (1493906267934).

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

1012001020002 is a wasteful number, since it uses less digits than its factorization.

1012001020002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8031754142 (or 8031754139 counting only the distinct ones).

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

Adding to 1012001020002 its reverse (2000201002101), we get a palindrome (3012202022103).

The spelling of 1012001020002 in words is "one trillion, twelve billion, one million, twenty thousand, two".