12001102002 has 24 divisors (see below), whose sum is σ = 26012077884. Its totient is φ = 3998876544.

The previous prime is 12001101971. The next prime is 12001102007. The reversal of 12001102002 is 20020110021.

It can be written as a sum of positive squares in 2 ways, for example, as 7919042121 + 4082059881 = 88989^2 + 63891^2 .

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 (12001102007) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74043 + ... + 171710.

Almost surely, 2^12001102002 is an apocalyptic number.

12001102002 is an abundant number, since it is smaller than the sum of its proper divisors (14010975882).

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

12001102002 is a wasteful number, since it uses less digits than its factorization.

12001102002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248474 (or 248471 counting only the distinct ones).

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

Adding to 12001102002 its reverse (20020110021), we get a palindrome (32021212023).

It can be divided in two parts, 12001 and 102002, that added together give a triangular number (114003 = T₄₇₇).

The spelling of 12001102002 in words is "twelve billion, one million, one hundred two thousand, two".