107221591 has 8 divisors (see below), whose sum is σ = 112496768. Its totient is φ = 102060000.

The previous prime is 107221589. The next prime is 107221637. The reversal of 107221591 is 195122701.

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

It is a 5-Lehmer number, since φ(107221591) divides (107221591-1)⁵.

It is a cyclic number.

It is not a de Polignac number, because 107221591 - 2¹ = 107221589 is a prime.

It is a super-2 number, since 2×107221591² = 22992939153142562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (107221511) 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, 26460 + ... + 30241.

It is an arithmetic number, because the mean of its divisors is an integer number (14062096).

Almost surely, 2^107221591 is an apocalyptic number.

107221591 is a deficient number, since it is larger than the sum of its proper divisors (5275177).

107221591 is an equidigital number, since it uses as much as digits as its factorization.

107221591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56793.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 107221591 is about 10354.7858983177. The cubic root of 107221591 is about 475.0734379529.

The spelling of 107221591 in words is "one hundred seven million, two hundred twenty-one thousand, five hundred ninety-one".