22000161 has 4 divisors (see below), whose sum is σ = 29333552. Its totient is φ = 14666772.

The previous prime is 22000151. The next prime is 22000169. The reversal of 22000161 is 16100022.

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 22000161 - 2⁵ = 22000129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22000169) 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, 3666691 + ... + 3666696.

It is an arithmetic number, because the mean of its divisors is an integer number (7333388).

Almost surely, 2^22000161 is an apocalyptic number.

It is an amenable number.

22000161 is a deficient number, since it is larger than the sum of its proper divisors (7333391).

22000161 is an equidigital number, since it uses as much as digits as its factorization.

22000161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7333390.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 22000161 is about 4690.4329224497. The cubic root of 22000161 is about 280.2046165916.

Adding to 22000161 its reverse (16100022), we get a palindrome (38100183).

The spelling of 22000161 in words is "twenty-two million, one hundred sixty-one", and thus it is an aban number.