12312220310022 has 32 divisors (see below), whose sum is σ = 25314171281280. Its totient is φ = 3989825743680.

The previous prime is 12312220310021. The next prime is 12312220310041. The reversal of 12312220310022 is 22001302221321.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312220310021) 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, 88357372 + ... + 88496607.

It is an arithmetic number, because the mean of its divisors is an integer number (791067852540).

Almost surely, 2^{12312220310022} is an apocalyptic number.

12312220310022 is an abundant number, since it is smaller than the sum of its proper divisors (13001950971258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12312220310022 is a wasteful number, since it uses less digits than its factorization.

12312220310022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176854308.

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

Adding to 12312220310022 its reverse (22001302221321), we get a palindrome (34313522531343).

The spelling of 12312220310022 in words is "twelve trillion, three hundred twelve billion, two hundred twenty million, three hundred ten thousand, twenty-two".