128032211 has 2 divisors, whose sum is σ = 128032212. Its totient is φ = 128032210.

The previous prime is 128032189. The next prime is 128032213. The reversal of 128032211 is 112230821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128032211 - 2¹⁸ = 127770067 is a prime.

It is a Sophie Germain prime.

Together with 128032213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (128032213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64016105 + 64016106.

It is an arithmetic number, because the mean of its divisors is an integer number (64016106).

Almost surely, 2^128032211 is an apocalyptic number.

128032211 is a deficient number, since it is larger than the sum of its proper divisors (1).

128032211 is an equidigital number, since it uses as much as digits as its factorization.

128032211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 128032211 is about 11315.1319479713. The cubic root of 128032211 is about 504.0106907008.

The spelling of 128032211 in words is "one hundred twenty-eight million, thirty-two thousand, two hundred eleven".