22222197 has 12 divisors (see below), whose sum is σ = 32182540. Its totient is φ = 14776128.

The previous prime is 22222129. The next prime is 22222199. The reversal of 22222197 is 79122222.

It can be written as a sum of positive squares in 2 ways, for example, as 12895281 + 9326916 = 3591^2 + 3054^2 .

It is not a de Polignac number, because 22222197 - 2¹⁸ = 21960053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22222197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 663 + ... + 6699.

Almost surely, 2^22222197 is an apocalyptic number.

It is an amenable number.

22222197 is a deficient number, since it is larger than the sum of its proper divisors (9960343).

22222197 is a wasteful number, since it uses less digits than its factorization.

22222197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6452 (or 6449 counting only the distinct ones).

The product of its digits is 2016, while the sum is 27.

The square root of 22222197 is about 4714.0425326889. The cubic root of 22222197 is about 281.1441154010.

It can be divided in two parts, 22222 and 197, that multiplied together give a palindrome (4377734).

The spelling of 22222197 in words is "twenty-two million, two hundred twenty-two thousand, one hundred ninety-seven".