12001020102 has 24 divisors (see below), whose sum is σ = 26965256136. Its totient is φ = 4000339872.

The previous prime is 12001020089. The next prime is 12001020127. The reversal of 12001020102 is 20102010021.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

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, 12346243 + ... + 12347214.

It is an arithmetic number, because the mean of its divisors is an integer number (1123552339).

Almost surely, 2^12001020102 is an apocalyptic number.

12001020102 is an abundant number, since it is smaller than the sum of its proper divisors (14964236034).

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

12001020102 is an equidigital number, since it uses as much as digits as its factorization.

12001020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24693474 (or 24693462 counting only the distinct ones).

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

Adding to 12001020102 its reverse (20102010021), we get a palindrome (32103030123).

The spelling of 12001020102 in words is "twelve billion, one million, twenty thousand, one hundred two".