12222251232 has 24 divisors (see below), whose sum is σ = 32083409736. Its totient is φ = 4074083712.

The previous prime is 12222251183. The next prime is 12222251233. The reversal of 12222251232 is 23215222221.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12222251233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63657463 + ... + 63657654.

It is an arithmetic number, because the mean of its divisors is an integer number (1336808739).

Almost surely, 2^12222251232 is an apocalyptic number.

12222251232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12222251232 is an abundant number, since it is smaller than the sum of its proper divisors (19861158504).

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

12222251232 is a wasteful number, since it uses less digits than its factorization.

12222251232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127315130 (or 127315122 counting only the distinct ones).

The product of its digits is 1920, while the sum is 24.

Adding to 12222251232 its reverse (23215222221), we get a palindrome (35437473453).

The spelling of 12222251232 in words is "twelve billion, two hundred twenty-two million, two hundred fifty-one thousand, two hundred thirty-two".