22936322021 has 4 divisors (see below), whose sum is σ = 24285517452. Its totient is φ = 21587126592.

The previous prime is 22936321999. The next prime is 22936322023. The reversal of 22936322021 is 12022363922.

22936322021 = 107089² + 107090².

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

It can be written as a sum of positive squares in 2 ways, for example, as 11468268100 + 11468053921 = 107090^2 + 107089^2 .

It is not a de Polignac number, because 22936322021 - 2¹⁰ = 22936320997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22936322023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 674597690 + ... + 674597723.

It is an arithmetic number, because the mean of its divisors is an integer number (6071379363).

Almost surely, 2^22936322021 is an apocalyptic number.

22936322021 is the 107090-th centered square number.

It is an amenable number.

22936322021 is a deficient number, since it is larger than the sum of its proper divisors (1349195431).

22936322021 is a wasteful number, since it uses less digits than its factorization.

22936322021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1349195430.

The product of its (nonzero) digits is 15552, while the sum is 32.

Adding to 22936322021 its reverse (12022363922), we get a palindrome (34958685943).

The spelling of 22936322021 in words is "twenty-two billion, nine hundred thirty-six million, three hundred twenty-two thousand, twenty-one".