202221000102197 has 2 divisors, whose sum is σ = 202221000102198. Its totient is φ = 202221000102196.

The previous prime is 202221000102113. The next prime is 202221000102217. The reversal of 202221000102197 is 791201000122202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 194632661068561 + 7588339033636 = 13951081^2 + 2754694^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221000102197 - 2³⁴ = 202203820233013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202221000102697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101110500051098 + 101110500051099.

It is an arithmetic number, because the mean of its divisors is an integer number (101110500051099).

Almost surely, 2^{202221000102197} is an apocalyptic number.

It is an amenable number.

202221000102197 is a deficient number, since it is larger than the sum of its proper divisors (1).

202221000102197 is an equidigital number, since it uses as much as digits as its factorization.

202221000102197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

Adding to 202221000102197 its reverse (791201000122202), we get a palindrome (993422000224399).

The spelling of 202221000102197 in words is "two hundred two trillion, two hundred twenty-one billion, one hundred two thousand, one hundred ninety-seven".