12042223131 has 4 divisors (see below), whose sum is σ = 16056297512. Its totient is φ = 8028148752.

The previous prime is 12042223129. The next prime is 12042223147. The reversal of 12042223131 is 13132224021.

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

It is not a de Polignac number, because 12042223131 - 2¹ = 12042223129 is a prime.

It is a super-2 number, since 2×12042223131² (a number of 21 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 = 12042223098 and 12042223107.

It is not an unprimeable number, because it can be changed into a prime (12042223331) 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, 2007037186 + ... + 2007037191.

It is an arithmetic number, because the mean of its divisors is an integer number (4014074378).

Almost surely, 2^12042223131 is an apocalyptic number.

12042223131 is a deficient number, since it is larger than the sum of its proper divisors (4014074381).

12042223131 is an equidigital number, since it uses as much as digits as its factorization.

12042223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4014074380.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12042223131 its reverse (13132224021), we get a palindrome (25174447152).

The spelling of 12042223131 in words is "twelve billion, forty-two million, two hundred twenty-three thousand, one hundred thirty-one".