12001001088 has 64 divisors (see below), whose sum is σ = 33263668800. Its totient is φ = 3826403328.

The previous prime is 12001001087. The next prime is 12001001113. The reversal of 12001001088 is 88010010021.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×12001001088² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12001001083) 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, 670573 + ... + 688236.

It is an arithmetic number, because the mean of its divisors is an integer number (519744825).

Almost surely, 2^12001001088 is an apocalyptic number.

It is an amenable number.

12001001088 is an abundant number, since it is smaller than the sum of its proper divisors (21262667712).

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

12001001088 is a wasteful number, since it uses less digits than its factorization.

12001001088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358849 (or 1358837 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 21.

The spelling of 12001001088 in words is "twelve billion, one million, one thousand, eighty-eight".