102001120002 has 48 divisors (see below), whose sum is σ = 226156053240. Its totient is φ = 33213113856.

The previous prime is 102001119989. The next prime is 102001120063. The reversal of 102001120002 is 200021100201.

It can be written as a sum of positive squares in 4 ways, for example, as 93520367721 + 8480752281 = 305811^2 + 92091^2 .

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 23 ways as a sum of consecutive naturals, for example, 14983 + ... + 451914.

Almost surely, 2^102001120002 is an apocalyptic number.

102001120002 is an abundant number, since it is smaller than the sum of its proper divisors (124154933238).

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

102001120002 is a wasteful number, since it uses less digits than its factorization.

102001120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467187 (or 467184 counting only the distinct ones).

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

Adding to 102001120002 its reverse (200021100201), we get a palindrome (302022220203).

The spelling of 102001120002 in words is "one hundred two billion, one million, one hundred twenty thousand, two".