169360221 has 4 divisors (see below), whose sum is σ = 225813632. Its totient is φ = 112906812.

The previous prime is 169360193. The next prime is 169360237. The reversal of 169360221 is 122063961.

169360221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 169360221 - 2²¹ = 167263069 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 (169360271) 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, 28226701 + ... + 28226706.

It is an arithmetic number, because the mean of its divisors is an integer number (56453408).

Almost surely, 2^169360221 is an apocalyptic number.

It is an amenable number.

169360221 is a deficient number, since it is larger than the sum of its proper divisors (56453411).

169360221 is an equidigital number, since it uses as much as digits as its factorization.

169360221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56453410.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 169360221 is about 13013.8472789564. The cubic root of 169360221 is about 553.2700193279.

The spelling of 169360221 in words is "one hundred sixty-nine million, three hundred sixty thousand, two hundred twenty-one".