12000000021999 has 16 divisors (see below), whose sum is σ = 17466933450240. Its totient is φ = 7267565634560.

The previous prime is 12000000021949. The next prime is 12000000022033. The reversal of 12000000021999 is 99912000000021.

It is not a de Polignac number, because 12000000021999 - 2¹⁵ = 11999999989231 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12000000021949) 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, 128994087 + ... + 129087080.

It is an arithmetic number, because the mean of its divisors is an integer number (1091683340640).

Almost surely, 2^{12000000021999} is an apocalyptic number.

12000000021999 is a deficient number, since it is larger than the sum of its proper divisors (5466933428241).

12000000021999 is a wasteful number, since it uses less digits than its factorization.

12000000021999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258082590.

The product of its (nonzero) digits is 2916, while the sum is 33.

The spelling of 12000000021999 in words is "twelve trillion, twenty-one thousand, nine hundred ninety-nine".