12312212230 has 16 divisors (see below), whose sum is σ = 23328402480. Its totient is φ = 4665680352.

The previous prime is 12312212201. The next prime is 12312212233. The reversal of 12312212230 is 3221221321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 12312212198 and 12312212207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312212233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32400369 + ... + 32400748.

It is an arithmetic number, because the mean of its divisors is an integer number (1458025155).

Almost surely, 2^12312212230 is an apocalyptic number.

12312212230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12312212230 is a deficient number, since it is larger than the sum of its proper divisors (11016190250).

12312212230 is a wasteful number, since it uses less digits than its factorization.

12312212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64801143.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 12312212230 its reverse (3221221321), we get a palindrome (15533433551).

Subtracting from 12312212230 its reverse (3221221321), we obtain a palindrome (9090990909).

The spelling of 12312212230 in words is "twelve billion, three hundred twelve million, two hundred twelve thousand, two hundred thirty".