22302161 has 4 divisors (see below), whose sum is σ = 25488192. Its totient is φ = 19116132.

The previous prime is 22302151. The next prime is 22302167. The reversal of 22302161 is 16120322.

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 22302161 - 2¹⁴ = 22285777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22302167) 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, 1593005 + ... + 1593018.

It is an arithmetic number, because the mean of its divisors is an integer number (6372048).

Almost surely, 2^22302161 is an apocalyptic number.

It is an amenable number.

22302161 is a deficient number, since it is larger than the sum of its proper divisors (3186031).

22302161 is an equidigital number, since it uses as much as digits as its factorization.

22302161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3186030.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 22302161 is about 4722.5163843019. The cubic root of 22302161 is about 281.4809332269.

Adding to 22302161 its reverse (16120322), we get a palindrome (38422483).

The spelling of 22302161 in words is "twenty-two million, three hundred two thousand, one hundred sixty-one".