12231232455 has 32 divisors (see below), whose sum is σ = 21081747456. Its totient is φ = 6019703424.

The previous prime is 12231232451. The next prime is 12231232457. The reversal of 12231232455 is 55423213221.

It is not a de Polignac number, because 12231232455 - 2² = 12231232451 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12231232451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 819994 + ... + 834776.

It is an arithmetic number, because the mean of its divisors is an integer number (658804608).

Almost surely, 2^12231232455 is an apocalyptic number.

12231232455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12231232455 is a deficient number, since it is larger than the sum of its proper divisors (8850515001).

12231232455 is a wasteful number, since it uses less digits than its factorization.

12231232455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19047.

The product of its digits is 14400, while the sum is 30.

Adding to 12231232455 its reverse (55423213221), we get a palindrome (67654445676).

The spelling of 12231232455 in words is "twelve billion, two hundred thirty-one million, two hundred thirty-two thousand, four hundred fifty-five".