12312232101 has 24 divisors (see below), whose sum is σ = 19157556600. Its totient is φ = 7574702976.

The previous prime is 12312232091. The next prime is 12312232103. The reversal of 12312232101 is 10123221321.

12312232101 is a `hidden beast` number, since 1 + 231 + 223 + 210 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 814817025 + 11497415076 = 28545^2 + 107226^2 .

It is not a de Polignac number, because 12312232101 - 2¹⁴ = 12312215717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312232103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 496735 + ... + 520931.

It is an arithmetic number, because the mean of its divisors is an integer number (798231525).

Almost surely, 2^12312232101 is an apocalyptic number.

It is an amenable number.

12312232101 is a deficient number, since it is larger than the sum of its proper divisors (6845324499).

12312232101 is a wasteful number, since it uses less digits than its factorization.

12312232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28565 (or 28562 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 12312232101 its reverse (10123221321), we get a palindrome (22435453422).

The spelling of 12312232101 in words is "twelve billion, three hundred twelve million, two hundred thirty-two thousand, one hundred one".