22301666161 has 4 divisors (see below), whose sum is σ = 22325934400. Its totient is φ = 22277397924.

The previous prime is 22301666143. The next prime is 22301666173. The reversal of 22301666161 is 16166610322.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16166610322 = 2 ⋅8083305161.

It is a cyclic number.

It is not a de Polignac number, because 22301666161 - 2⁵ = 22301666129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22301666561) 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, 12132741 + ... + 12134578.

It is an arithmetic number, because the mean of its divisors is an integer number (5581483600).

Almost surely, 2^22301666161 is an apocalyptic number.

It is an amenable number.

22301666161 is a deficient number, since it is larger than the sum of its proper divisors (24268239).

22301666161 is an equidigital number, since it uses as much as digits as its factorization.

22301666161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24268238.

The product of its (nonzero) digits is 15552, while the sum is 34.

The spelling of 22301666161 in words is "twenty-two billion, three hundred one million, six hundred sixty-six thousand, one hundred sixty-one".