12621132 has 18 divisors (see below), whose sum is σ = 31903508. Its totient is φ = 4207032.

The previous prime is 12621127. The next prime is 12621137. The reversal of 12621132 is 23112621.

12621132 is a `hidden beast` number, since 12 + 621 + 1 + 32 = 666.

It is an interprime number because it is at equal distance from previous prime (12621127) and next prime (12621137).

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12621132² = 318585945922848, which contains 22 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12621137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 175258 + ... + 175329.

Almost surely, 2^12621132 is an apocalyptic number.

12621132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12621132 is an abundant number, since it is smaller than the sum of its proper divisors (19282376).

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

12621132 is a wasteful number, since it uses less digits than its factorization.

12621132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350597 (or 350592 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 12621132 is about 3552.6232561306. The cubic root of 12621132 is about 232.8266930104.

Adding to 12621132 its reverse (23112621), we get a palindrome (35733753).

The spelling of 12621132 in words is "twelve million, six hundred twenty-one thousand, one hundred thirty-two".