12041664121 has 4 divisors (see below), whose sum is σ = 12042505552. Its totient is φ = 12040822692.

The previous prime is 12041664101. The next prime is 12041664127. The reversal of 12041664121 is 12146614021.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12041664121 - 2²¹ = 12039566969 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12041664121.

It is not an unprimeable number, because it can be changed into a prime (12041664127) 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, 398871 + ... + 427996.

It is an arithmetic number, because the mean of its divisors is an integer number (3010626388).

Almost surely, 2^12041664121 is an apocalyptic number.

It is an amenable number.

12041664121 is a deficient number, since it is larger than the sum of its proper divisors (841431).

12041664121 is an equidigital number, since it uses as much as digits as its factorization.

12041664121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 841430.

The product of its (nonzero) digits is 2304, while the sum is 28.

The spelling of 12041664121 in words is "twelve billion, forty-one million, six hundred sixty-four thousand, one hundred twenty-one".