22226161 has 8 divisors (see below), whose sum is σ = 22547304. Its totient is φ = 21907200.

The previous prime is 22226153. The next prime is 22226167. The reversal of 22226161 is 16162222.

It can be written as a sum of positive squares in 4 ways, for example, as 3779136 + 18447025 = 1944^2 + 4295^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22226161 - 2³ = 22226153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22226167) 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, 33711 + ... + 34363.

It is an arithmetic number, because the mean of its divisors is an integer number (2818413).

Almost surely, 2^22226161 is an apocalyptic number.

It is an amenable number.

22226161 is a deficient number, since it is larger than the sum of its proper divisors (321143).

22226161 is a wasteful number, since it uses less digits than its factorization.

22226161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091.

The product of its digits is 576, while the sum is 22.

The square root of 22226161 is about 4714.4629598715. The cubic root of 22226161 is about 281.1608312552.

Adding to 22226161 its reverse (16162222), we get a palindrome (38388383).

The spelling of 22226161 in words is "twenty-two million, two hundred twenty-six thousand, one hundred sixty-one".