22122123194 has 4 divisors (see below), whose sum is σ = 33183184794. Its totient is φ = 11061061596.

The previous prime is 22122123193. The next prime is 22122123209. The reversal of 22122123194 is 49132122122.

It is a happy number.

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., 15503487169 + 6618636025 = 124513^2 + 81355^2 .

It is a super-2 number, since 2×22122123194² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22122123193) 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, 5530530797 + ... + 5530530800.

Almost surely, 2^22122123194 is an apocalyptic number.

22122123194 is a deficient number, since it is larger than the sum of its proper divisors (11061061600).

22122123194 is a wasteful number, since it uses less digits than its factorization.

22122123194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11061061599.

The product of its digits is 3456, while the sum is 29.

The spelling of 22122123194 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-three thousand, one hundred ninety-four".