272221999 has 12 divisors (see below), whose sum is σ = 317120184. Its totient is φ = 232998864.

The previous prime is 272221993. The next prime is 272222021. The reversal of 272221999 is 999122272.

It is not a de Polignac number, because 272221999 - 2³ = 272221991 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 (272221991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 34284 + ... + 41470.

It is an arithmetic number, because the mean of its divisors is an integer number (26426682).

Almost surely, 2^272221999 is an apocalyptic number.

272221999 is a deficient number, since it is larger than the sum of its proper divisors (44898185).

272221999 is an equidigital number, since it uses as much as digits as its factorization.

272221999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974 (or 7967 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 272221999 is about 16499.1514630298. The cubic root of 272221999 is about 648.0985845221.

The spelling of 272221999 in words is "two hundred seventy-two million, two hundred twenty-one thousand, nine hundred ninety-nine".