22223161 has 2 divisors, whose sum is σ = 22223162. Its totient is φ = 22223160.

The previous prime is 22223147. The next prime is 22223197. The reversal of 22223161 is 16132222.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13461561 + 8761600 = 3669^2 + 2960^2 .

It is a cyclic number.

It is not a de Polignac number, because 22223161 - 2⁹ = 22222649 is a prime.

It is not a weakly prime, because it can be changed into another prime (22223101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111580 + 11111581.

It is an arithmetic number, because the mean of its divisors is an integer number (11111581).

Almost surely, 2^22223161 is an apocalyptic number.

It is an amenable number.

22223161 is a deficient number, since it is larger than the sum of its proper divisors (1).

22223161 is an equidigital number, since it uses as much as digits as its factorization.

22223161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 22223161 is about 4714.1447792786. The cubic root of 22223161 is about 281.1481806907.

Adding to 22223161 its reverse (16132222), we get a palindrome (38355383).

The spelling of 22223161 in words is "twenty-two million, two hundred twenty-three thousand, one hundred sixty-one".