128215201 has 8 divisors (see below), whose sum is σ = 133165440. Its totient is φ = 123357648.

The previous prime is 128215193. The next prime is 128215223. The reversal of 128215201 is 102512821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128215201 - 2³ = 128215193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128215231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20346 + ... + 25891.

It is an arithmetic number, because the mean of its divisors is an integer number (16645680).

Almost surely, 2^128215201 is an apocalyptic number.

It is an amenable number.

128215201 is a deficient number, since it is larger than the sum of its proper divisors (4950239).

128215201 is an equidigital number, since it uses as much as digits as its factorization.

128215201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46343.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 128215201 is about 11323.2151352873. The cubic root of 128215201 is about 504.2506954388.

The spelling of 128215201 in words is "one hundred twenty-eight million, two hundred fifteen thousand, two hundred one".