22056210997 has 4 divisors (see below), whose sum is σ = 22086057760. Its totient is φ = 22026364236.

The previous prime is 22056210983. The next prime is 22056211019. The reversal of 22056210997 is 79901265022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22056210997 - 2¹¹ = 22056208949 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 (22056210937) 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, 14922273 + ... + 14923750.

It is an arithmetic number, because the mean of its divisors is an integer number (5521514440).

Almost surely, 2^22056210997 is an apocalyptic number.

It is an amenable number.

22056210997 is a deficient number, since it is larger than the sum of its proper divisors (29846763).

22056210997 is an equidigital number, since it uses as much as digits as its factorization.

22056210997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29846762.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 22056210997 in words is "twenty-two billion, fifty-six million, two hundred ten thousand, nine hundred ninety-seven".