197222216111111 has 2 divisors, whose sum is σ = 197222216111112. Its totient is φ = 197222216111110.

The previous prime is 197222216111069. The next prime is 197222216111177. The reversal of 197222216111111 is 111111612222791.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 197222216111111 - 2¹⁴ = 197222216094727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (197222216161111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 98611108055555 + 98611108055556.

It is an arithmetic number, because the mean of its divisors is an integer number (98611108055556).

Almost surely, 2^{197222216111111} is an apocalyptic number.

197222216111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

197222216111111 is an equidigital number, since it uses as much as digits as its factorization.

197222216111111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 38.

The spelling of 197222216111111 in words is "one hundred ninety-seven trillion, two hundred twenty-two billion, two hundred sixteen million, one hundred eleven thousand, one hundred eleven".