132251021 has 4 divisors (see below), whose sum is σ = 151144032. Its totient is φ = 113358012.

The previous prime is 132251017. The next prime is 132251027. The reversal of 132251021 is 120152231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 120152231 = 239 ⋅502729.

It is a cyclic number.

It is not a de Polignac number, because 132251021 - 2² = 132251017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (132251027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9446495 + ... + 9446508.

It is an arithmetic number, because the mean of its divisors is an integer number (37786008).

Almost surely, 2^132251021 is an apocalyptic number.

It is an amenable number.

132251021 is a deficient number, since it is larger than the sum of its proper divisors (18893011).

132251021 is an equidigital number, since it uses as much as digits as its factorization.

132251021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18893010.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 132251021 is about 11500.0443912187. The cubic root of 132251021 is about 509.4868874919.

The spelling of 132251021 in words is "one hundred thirty-two million, two hundred fifty-one thousand, twenty-one".