12223031111231 has 4 divisors (see below), whose sum is σ = 12241749383112. Its totient is φ = 12204312839352.

The previous prime is 12223031111219. The next prime is 12223031111237. The reversal of 12223031111231 is 13211113032221.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12223031111231 is a prime.

It is a super-2 number, since 2×12223031111231² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12223031111197 and 12223031111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12223031111237) 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, 9359134961 + ... + 9359136266.

It is an arithmetic number, because the mean of its divisors is an integer number (3060437345778).

Almost surely, 2^{12223031111231} is an apocalyptic number.

12223031111231 is a deficient number, since it is larger than the sum of its proper divisors (18718271881).

12223031111231 is an equidigital number, since it uses as much as digits as its factorization.

12223031111231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18718271880.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 12223031111231 its reverse (13211113032221), we get a palindrome (25434144143452).

The spelling of 12223031111231 in words is "twelve trillion, two hundred twenty-three billion, thirty-one million, one hundred eleven thousand, two hundred thirty-one".