22146548218 has 4 divisors (see below), whose sum is σ = 33219822330. Its totient is φ = 11073274108.

The previous prime is 22146548201. The next prime is 22146548267. The reversal of 22146548218 is 81284564122.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81284564122 = 2 ⋅40642282061.

It can be written as a sum of positive squares in only one way, i.e., 19181419009 + 2965129209 = 138497^2 + 54453^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5536637053 + ... + 5536637056.

Almost surely, 2^22146548218 is an apocalyptic number.

22146548218 is a deficient number, since it is larger than the sum of its proper divisors (11073274112).

22146548218 is a wasteful number, since it uses less digits than its factorization.

22146548218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073274111.

The product of its digits is 245760, while the sum is 43.

The spelling of 22146548218 in words is "twenty-two billion, one hundred forty-six million, five hundred forty-eight thousand, two hundred eighteen".