100001020120002 has 16 divisors (see below), whose sum is σ = 222224489155680. Its totient is φ = 33333673373316.

The previous prime is 100001020119989. The next prime is 100001020120007. The reversal of 100001020120002 is 200021020100001.

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 (100001020120007) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925935371428 + ... + 925935371535.

It is an arithmetic number, because the mean of its divisors is an integer number (13889030572230).

Almost surely, 2^{100001020120002} is an apocalyptic number.

100001020120002 is an abundant number, since it is smaller than the sum of its proper divisors (122223469035678).

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

100001020120002 is a wasteful number, since it uses less digits than its factorization.

100001020120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851870742974 (or 1851870742968 counting only the distinct ones).

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

Adding to 100001020120002 its reverse (200021020100001), we get a palindrome (300022040220003).

The spelling of 100001020120002 in words is "one hundred trillion, one billion, twenty million, one hundred twenty thousand, two".