123221132 has 12 divisors (see below), whose sum is σ = 215742240. Its totient is φ = 61580496.

The previous prime is 123221129. The next prime is 123221141. The reversal of 123221132 is 231122321.

It is a super-2 number, since 2×123221132² = 30366894742722848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 123221132.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3494 + ... + 16082.

It is an arithmetic number, because the mean of its divisors is an integer number (17978520).

Almost surely, 2^123221132 is an apocalyptic number.

It is an amenable number.

123221132 is a deficient number, since it is larger than the sum of its proper divisors (92521108).

123221132 is a wasteful number, since it uses less digits than its factorization.

123221132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15040 (or 15038 counting only the distinct ones).

The product of its digits is 144, while the sum is 17.

The square root of 123221132 is about 11100.5014301157. The cubic root of 123221132 is about 497.6168350969.

Adding to 123221132 its reverse (231122321), we get a palindrome (354343453).

The spelling of 123221132 in words is "one hundred twenty-three million, two hundred twenty-one thousand, one hundred thirty-two".