12312012022 has 4 divisors (see below), whose sum is σ = 18468018036. Its totient is φ = 6156006010.

The previous prime is 12312012007. The next prime is 12312012029. The reversal of 12312012022 is 22021021321.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 12312011987 and 12312012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312012029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3078003004 + ... + 3078003007.

It is an arithmetic number, because the mean of its divisors is an integer number (4617004509).

Almost surely, 2^12312012022 is an apocalyptic number.

12312012022 is a deficient number, since it is larger than the sum of its proper divisors (6156006014).

12312012022 is an equidigital number, since it uses as much as digits as its factorization.

12312012022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156006013.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 12312012022 its reverse (22021021321), we get a palindrome (34333033343).

The spelling of 12312012022 in words is "twelve billion, three hundred twelve million, twelve thousand, twenty-two".