22036122778 has 4 divisors (see below), whose sum is σ = 33054184170. Its totient is φ = 11018061388.

The previous prime is 22036122767. The next prime is 22036122793. The reversal of 22036122778 is 87722163022.

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., 14351321209 + 7684801569 = 119797^2 + 87663^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 22036122778.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5509030693 + ... + 5509030696.

Almost surely, 2^22036122778 is an apocalyptic number.

22036122778 is a deficient number, since it is larger than the sum of its proper divisors (11018061392).

22036122778 is a wasteful number, since it uses less digits than its factorization.

22036122778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11018061391.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 22036122778 in words is "twenty-two billion, thirty-six million, one hundred twenty-two thousand, seven hundred seventy-eight".