12312213122 has 16 divisors (see below), whose sum is σ = 21023226432. Its totient is φ = 5353135920.

The previous prime is 12312213119. The next prime is 12312213157. The reversal of 12312213122 is 22131221321.

It is a junction number, because it is equal to n+sod(n) for n = 12312213094 and 12312213103.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12165713 + ... + 12166724.

It is an arithmetic number, because the mean of its divisors is an integer number (1313951652).

Almost surely, 2^12312213122 is an apocalyptic number.

12312213122 is a deficient number, since it is larger than the sum of its proper divisors (8711013310).

12312213122 is a wasteful number, since it uses less digits than its factorization.

12312213122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24332473.

The product of its digits is 288, while the sum is 20.

Adding to 12312213122 its reverse (22131221321), we get a palindrome (34443434443).

The spelling of 12312213122 in words is "twelve billion, three hundred twelve million, two hundred thirteen thousand, one hundred twenty-two".