20222012197 has 2 divisors, whose sum is σ = 20222012198. Its totient is φ = 20222012196.

The previous prime is 20222012191. The next prime is 20222012201. The reversal of 20222012197 is 79121022202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12185068996 + 8036943201 = 110386^2 + 89649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20222012197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20222012191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111006098 + 10111006099.

It is an arithmetic number, because the mean of its divisors is an integer number (10111006099).

Almost surely, 2^20222012197 is an apocalyptic number.

It is an amenable number.

20222012197 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222012197 is an equidigital number, since it uses as much as digits as its factorization.

20222012197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

Adding to 20222012197 its reverse (79121022202), we get a palindrome (99343034399).

The spelling of 20222012197 in words is "twenty billion, two hundred twenty-two million, twelve thousand, one hundred ninety-seven".