132221220 has 48 divisors (see below), whose sum is σ = 377213760. Its totient is φ = 34592896.

The previous prime is 132221207. The next prime is 132221233. The reversal of 132221220 is 22122231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (132221207) and next prime (132221233).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 132221220.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17610 + ... + 23969.

It is an arithmetic number, because the mean of its divisors is an integer number (7858620).

Almost surely, 2^132221220 is an apocalyptic number.

132221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

132221220 is an abundant number, since it is smaller than the sum of its proper divisors (244992540).

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

132221220 is a wasteful number, since it uses less digits than its factorization.

132221220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41644 (or 41642 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 132221220 is about 11498.7486275681. The cubic root of 132221220 is about 509.4486159302.

Adding to 132221220 its reverse (22122231), we get a palindrome (154343451).

The spelling of 132221220 in words is "one hundred thirty-two million, two hundred twenty-one thousand, two hundred twenty".