12012111021999 has 8 divisors (see below), whose sum is σ = 17472161486592. Its totient is φ = 7280067286040.

The previous prime is 12012111021947. The next prime is 12012111022003. The reversal of 12012111021999 is 99912011121021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12012111021999 - 2⁷ = 12012111021871 is a prime.

It is a super-2 number, since 2×12012111021999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12012111021199) 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, 182001682119 + ... + 182001682184.

It is an arithmetic number, because the mean of its divisors is an integer number (2184020185824).

Almost surely, 2^{12012111021999} is an apocalyptic number.

12012111021999 is a deficient number, since it is larger than the sum of its proper divisors (5460050464593).

12012111021999 is a wasteful number, since it uses less digits than its factorization.

12012111021999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364003364317.

The product of its (nonzero) digits is 5832, while the sum is 39.

The spelling of 12012111021999 in words is "twelve trillion, twelve billion, one hundred eleven million, twenty-one thousand, nine hundred ninety-nine".