12212113211131 has 4 divisors (see below), whose sum is σ = 12496115843992. Its totient is φ = 11928110578272.

The previous prime is 12212113211119. The next prime is 12212113211159. The reversal of 12212113211131 is 13111231121221.

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 12212113211131 - 2²⁹ = 12211576340219 is a prime.

It is a super-2 number, since 2×12212113211131² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12212113241131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142001316366 + ... + 142001316451.

It is an arithmetic number, because the mean of its divisors is an integer number (3124028960998).

Almost surely, 2^{12212113211131} is an apocalyptic number.

12212113211131 is a deficient number, since it is larger than the sum of its proper divisors (284002632861).

12212113211131 is an equidigital number, since it uses as much as digits as its factorization.

12212113211131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284002632860.

The product of its digits is 144, while the sum is 22.

Adding to 12212113211131 its reverse (13111231121221), we get a palindrome (25323344332352).

The spelling of 12212113211131 in words is "twelve trillion, two hundred twelve billion, one hundred thirteen million, two hundred eleven thousand, one hundred thirty-one".