197222226197 has 2 divisors, whose sum is σ = 197222226198. Its totient is φ = 197222226196.

The previous prime is 197222226139. The next prime is 197222226217. The reversal of 197222226197 is 791622222791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 150637910641 + 46584315556 = 388121^2 + 215834^2 .

It is a cyclic number.

It is not a de Polignac number, because 197222226197 - 2¹⁰ = 197222225173 is a prime.

It is a super-2 number, since 2×197222226197² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197222226127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98611113098 + 98611113099.

It is an arithmetic number, because the mean of its divisors is an integer number (98611113099).

Almost surely, 2^197222226197 is an apocalyptic number.

It is an amenable number.

197222226197 is a deficient number, since it is larger than the sum of its proper divisors (1).

197222226197 is an equidigital number, since it uses as much as digits as its factorization.

197222226197 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 50.

The spelling of 197222226197 in words is "one hundred ninety-seven billion, two hundred twenty-two million, two hundred twenty-six thousand, one hundred ninety-seven".