12231212100312 has 32 divisors (see below), whose sum is σ = 30578671457280. Its totient is φ = 4076985205920.

The previous prime is 12231212100277. The next prime is 12231212100319. The reversal of 12231212100312 is 21300121213221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231212100319) 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, 4169764 + ... + 6469107.

It is an arithmetic number, because the mean of its divisors is an integer number (955583483040).

Almost surely, 2^{12231212100312} is an apocalyptic number.

12231212100312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12231212100312 is an abundant number, since it is smaller than the sum of its proper divisors (18347459356968).

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

12231212100312 is a wasteful number, since it uses less digits than its factorization.

12231212100312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10686783 (or 10686779 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 12231212100312 its reverse (21300121213221), we get a palindrome (33531333313533).

The spelling of 12231212100312 in words is "twelve trillion, two hundred thirty-one billion, two hundred twelve million, one hundred thousand, three hundred twelve".