190271221 has 4 divisors (see below), whose sum is σ = 217452832. Its totient is φ = 163089612.

The previous prime is 190271189. The next prime is 190271227. The reversal of 190271221 is 122172091.

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.

It is not a de Polignac number, because 190271221 - 2⁵ = 190271189 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 (190271227) 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, 13590795 + ... + 13590808.

It is an arithmetic number, because the mean of its divisors is an integer number (54363208).

Almost surely, 2^190271221 is an apocalyptic number.

It is an amenable number.

190271221 is a deficient number, since it is larger than the sum of its proper divisors (27181611).

190271221 is an equidigital number, since it uses as much as digits as its factorization.

190271221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27181610.

The product of its (nonzero) digits is 504, while the sum is 25.

The square root of 190271221 is about 13793.8834633326. The cubic root of 190271221 is about 575.1631254881.

The spelling of 190271221 in words is "one hundred ninety million, two hundred seventy-one thousand, two hundred twenty-one".