128132227 has 4 divisors (see below), whose sum is σ = 128161080. Its totient is φ = 128103376.

The previous prime is 128132197. The next prime is 128132239. The reversal of 128132227 is 722231821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128132227 - 2⁷ = 128132099 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128132195 and 128132204.

It is not an unprimeable number, because it can be changed into a prime (128132297) 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, 6202 + ... + 17167.

It is an arithmetic number, because the mean of its divisors is an integer number (32040270).

Almost surely, 2^128132227 is an apocalyptic number.

128132227 is a deficient number, since it is larger than the sum of its proper divisors (28853).

128132227 is an equidigital number, since it uses as much as digits as its factorization.

128132227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28852.

The product of its digits is 2688, while the sum is 28.

The square root of 128132227 is about 11319.5506536258. The cubic root of 128132227 is about 504.1418972995.

It can be divided in two parts, 128 and 132227, that added together give a triangular number (132355 = T₅₁₄).

The spelling of 128132227 in words is "one hundred twenty-eight million, one hundred thirty-two thousand, two hundred twenty-seven".