22236476161 has 3 divisors (see below), whose sum is σ = 22236625281. Its totient is φ = 22236327042.

The previous prime is 22236476149. The next prime is 22236476167. The reversal of 22236476161 is 16167463222.

The square root of 22236476161 is 149119.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 22236476161 - 2⁷ = 22236476033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22236476167) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 74560 + ... + 223678.

It is an arithmetic number, because the mean of its divisors is an integer number (7412208427).

Almost surely, 2^22236476161 is an apocalyptic number.

22236476161 is the 149119-th square number.

22236476161 is the 74560-th centered octagonal number.

It is an amenable number.

22236476161 is a deficient number, since it is larger than the sum of its proper divisors (149120).

22236476161 is an frugal number, since it uses more digits than its factorization.

22236476161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298238 (or 149119 counting only the distinct ones).

The product of its digits is 145152, while the sum is 40.

The spelling of 22236476161 in words is "twenty-two billion, two hundred thirty-six million, four hundred seventy-six thousand, one hundred sixty-one".