20222197 has 12 divisors (see below), whose sum is σ = 21661920. Its totient is φ = 18873536.

The previous prime is 20222179. The next prime is 20222201. The reversal of 20222197 is 79122202.

It is not a de Polignac number, because 20222197 - 2¹¹ = 20220149 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 (20222117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48054 + ... + 48472.

It is an arithmetic number, because the mean of its divisors is an integer number (1805160).

Almost surely, 2^20222197 is an apocalyptic number.

It is an amenable number.

20222197 is a deficient number, since it is larger than the sum of its proper divisors (1439723).

20222197 is a wasteful number, since it uses less digits than its factorization.

20222197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 603 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 20222197 is about 4496.9097166832. The cubic root of 20222197 is about 272.4432875835.

Adding to 20222197 its reverse (79122202), we get a palindrome (99344399).

The spelling of 20222197 in words is "twenty million, two hundred twenty-two thousand, one hundred ninety-seven".