22120993 has 4 divisors (see below), whose sum is σ = 22316868. Its totient is φ = 21925120.

The previous prime is 22120957. The next prime is 22121003. The reversal of 22120993 is 39902122.

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 7551504 + 14569489 = 2748^2 + 3817^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22120993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22120913) 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, 97768 + ... + 97993.

It is an arithmetic number, because the mean of its divisors is an integer number (5579217).

Almost surely, 2^22120993 is an apocalyptic number.

It is an amenable number.

22120993 is a deficient number, since it is larger than the sum of its proper divisors (195875).

22120993 is a wasteful number, since it uses less digits than its factorization.

22120993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195874.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 22120993 is about 4703.2959719754. The cubic root of 22120993 is about 280.7166717367.

The spelling of 22120993 in words is "twenty-two million, one hundred twenty thousand, nine hundred ninety-three".