12234311232561 has 64 divisors (see below), whose sum is σ = 19833659539200. Its totient is φ = 7391865600000.

The previous prime is 12234311232551. The next prime is 12234311232569. The reversal of 12234311232561 is 16523211343221.

12234311232561 is a `hidden beast` number, since 1 + 2 + 2 + 34 + 31 + 1 + 2 + 32 + 561 = 666.

It is not a de Polignac number, because 12234311232561 - 2¹⁵ = 12234311199793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12234311232569) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 233003811 + ... + 233056311.

It is an arithmetic number, because the mean of its divisors is an integer number (309900930300).

Almost surely, 2^{12234311232561} is an apocalyptic number.

12234311232561 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12234311232561 is a deficient number, since it is larger than the sum of its proper divisors (7599348306639).

12234311232561 is a wasteful number, since it uses less digits than its factorization.

12234311232561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54927 (or 54921 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

Adding to 12234311232561 its reverse (16523211343221), we get a palindrome (28757522575782).

The spelling of 12234311232561 in words is "twelve trillion, two hundred thirty-four billion, three hundred eleven million, two hundred thirty-two thousand, five hundred sixty-one".