12221230032 has 60 divisors (see below), whose sum is σ = 37311790464. Its totient is φ = 3703402560.

The previous prime is 12221230031. The next prime is 12221230033. The reversal of 12221230032 is 23003212221.

12221230032 is a `hidden beast` number, since 122 + 212 + 300 + 32 = 666.

It is an interprime number because it is at equal distance from previous prime (12221230031) and next prime (12221230033).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 12221229987 and 12221230014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12221230031) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3856128 + ... + 3859295.

Almost surely, 2^12221230032 is an apocalyptic number.

12221230032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12221230032 is an abundant number, since it is smaller than the sum of its proper divisors (25090560432).

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

12221230032 is a wasteful number, since it uses less digits than its factorization.

12221230032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7715448 (or 7715439 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 12221230032 its reverse (23003212221), we get a palindrome (35224442253).

The spelling of 12221230032 in words is "twelve billion, two hundred twenty-one million, two hundred thirty thousand, thirty-two".