20222797 has 4 divisors (see below), whose sum is σ = 23111776. Its totient is φ = 17333820.

The previous prime is 20222791. The next prime is 20222827. The reversal of 20222797 is 79722202.

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 not a de Polignac number, because 20222797 - 2³ = 20222789 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 (20222791) 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, 1444479 + ... + 1444492.

It is an arithmetic number, because the mean of its divisors is an integer number (5777944).

Almost surely, 2^20222797 is an apocalyptic number.

It is an amenable number.

20222797 is a deficient number, since it is larger than the sum of its proper divisors (2888979).

20222797 is an equidigital number, since it uses as much as digits as its factorization.

20222797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2888978.

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20222797 is about 4496.9764286685. The cubic root of 20222797 is about 272.4459820542.

Adding to 20222797 its reverse (79722202), we get a palindrome (99944999).

The spelling of 20222797 in words is "twenty million, two hundred twenty-two thousand, seven hundred ninety-seven".