22194400274 has 4 divisors (see below), whose sum is σ = 33291600414. Its totient is φ = 11097200136.

The previous prime is 22194400273. The next prime is 22194400297. The reversal of 22194400274 is 47200449122.

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., 21513555625 + 680844649 = 146675^2 + 26093^2 .

It is not an unprimeable number, because it can be changed into a prime (22194400273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5548600067 + ... + 5548600070.

Almost surely, 2^22194400274 is an apocalyptic number.

22194400274 is a deficient number, since it is larger than the sum of its proper divisors (11097200140).

22194400274 is a wasteful number, since it uses less digits than its factorization.

22194400274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097200139.

The product of its (nonzero) digits is 32256, while the sum is 35.

Adding to 22194400274 its reverse (47200449122), we get a palindrome (69394849396).

The spelling of 22194400274 in words is "twenty-two billion, one hundred ninety-four million, four hundred thousand, two hundred seventy-four".