22045165042 has 4 divisors (see below), whose sum is σ = 33067747566. Its totient is φ = 11022582520.

The previous prime is 22045165019. The next prime is 22045165049. The reversal of 22045165042 is 24056154022.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 13455768001 + 8589397041 = 115999^2 + 92679^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 22045164995 and 22045165013.

It is not an unprimeable number, because it can be changed into a prime (22045165049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5511291259 + ... + 5511291262.

Almost surely, 2^22045165042 is an apocalyptic number.

22045165042 is a deficient number, since it is larger than the sum of its proper divisors (11022582524).

22045165042 is a wasteful number, since it uses less digits than its factorization.

22045165042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11022582523.

The product of its (nonzero) digits is 19200, while the sum is 31.

The spelling of 22045165042 in words is "twenty-two billion, forty-five million, one hundred sixty-five thousand, forty-two".