12223123131 has 16 divisors (see below), whose sum is σ = 17259264000. Its totient is φ = 7668037248.

The previous prime is 12223123117. The next prime is 12223123153. The reversal of 12223123131 is 13132132221.

It is not a de Polignac number, because 12223123131 - 2⁹ = 12223122619 is a prime.

It is a super-2 number, since 2×12223123131² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12223123098 and 12223123107.

It is not an unprimeable number, because it can be changed into a prime (12223123631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318390 + ... + 354708.

It is an arithmetic number, because the mean of its divisors is an integer number (1078704000).

Almost surely, 2^12223123131 is an apocalyptic number.

12223123131 is a deficient number, since it is larger than the sum of its proper divisors (5036140869).

12223123131 is a wasteful number, since it uses less digits than its factorization.

12223123131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42938.

The product of its digits is 432, while the sum is 21.

Adding to 12223123131 its reverse (13132132221), we get a palindrome (25355255352).

The spelling of 12223123131 in words is "twelve billion, two hundred twenty-three million, one hundred twenty-three thousand, one hundred thirty-one".