12221132 has 24 divisors (see below), whose sum is σ = 26664960. Its totient is φ = 4761360.

The previous prime is 12221117. The next prime is 12221171. The reversal of 12221132 is 23112221.

It is a happy number.

It is a super-2 number, since 2×12221132² = 298712134722848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19532 + ... + 20147.

It is an arithmetic number, because the mean of its divisors is an integer number (1111040).

Almost surely, 2^12221132 is an apocalyptic number.

It is an amenable number.

12221132 is an abundant number, since it is smaller than the sum of its proper divisors (14443828).

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

12221132 is a wasteful number, since it uses less digits than its factorization.

12221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39701 (or 39699 counting only the distinct ones).

The product of its digits is 48, while the sum is 14.

The square root of 12221132 is about 3495.8735675078. The cubic root of 12221132 is about 230.3405917995.

Adding to 12221132 its reverse (23112221), we get a palindrome (35333353).

The spelling of 12221132 in words is "twelve million, two hundred twenty-one thousand, one hundred thirty-two".