12001002221111 has 4 divisors (see below), whose sum is σ = 12002029979832. Its totient is φ = 11999974462392.

The previous prime is 12001002221107. The next prime is 12001002221147. The reversal of 12001002221111 is 11112220010021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12001002221111 - 2² = 12001002221107 is a prime.

It is a super-2 number, since 2×12001002221111² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001002221161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513861845 + ... + 513885198.

It is an arithmetic number, because the mean of its divisors is an integer number (3000507494958).

Almost surely, 2^{12001002221111} is an apocalyptic number.

12001002221111 is a deficient number, since it is larger than the sum of its proper divisors (1027758721).

12001002221111 is a wasteful number, since it uses less digits than its factorization.

12001002221111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027758720.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 12001002221111 its reverse (11112220010021), we get a palindrome (23113222231132).

The spelling of 12001002221111 in words is "twelve trillion, one billion, two million, two hundred twenty-one thousand, one hundred eleven".