12002122000 has 80 divisors (see below), whose sum is σ = 31659473664. Its totient is φ = 4364400000.

The previous prime is 12002121979. The next prime is 12002122001. The reversal of 12002122000 is 22120021.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (12002122001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250776 + ... + 294775.

Almost surely, 2^12002122000 is an apocalyptic number.

12002122000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12002122000 is an abundant number, since it is smaller than the sum of its proper divisors (19657351664).

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

12002122000 is a wasteful number, since it uses less digits than its factorization.

12002122000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545585 (or 545569 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 12002122000 its reverse (22120021), we get a palindrome (12024242021).

The spelling of 12002122000 in words is "twelve billion, two million, one hundred twenty-two thousand".