12131022442 has 64 divisors (see below), whose sum is σ = 22946976000. Its totient is φ = 4672442880.

The previous prime is 12131022437. The next prime is 12131022461. The reversal of 12131022442 is 24422013121.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5345284 + ... + 5347552.

It is an arithmetic number, because the mean of its divisors is an integer number (358546500).

Almost surely, 2^12131022442 is an apocalyptic number.

12131022442 is a deficient number, since it is larger than the sum of its proper divisors (10815953558).

12131022442 is a wasteful number, since it uses less digits than its factorization.

12131022442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2671.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 12131022442 its reverse (24422013121), we get a palindrome (36553035563).

The spelling of 12131022442 in words is "twelve billion, one hundred thirty-one million, twenty-two thousand, four hundred forty-two".