212221722675089 has 2 divisors, whose sum is σ = 212221722675090. Its totient is φ = 212221722675088.

The previous prime is 212221722675077. The next prime is 212221722675167. The reversal of 212221722675089 is 980576227122212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 131992709260864 + 80229013414225 = 11488808^2 + 8957065^2 .

It is a cyclic number.

It is not a de Polignac number, because 212221722675089 - 2²⁰ = 212221721626513 is a prime.

It is a super-2 number, since 2×212221722675089² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (212221722675029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106110861337544 + 106110861337545.

It is an arithmetic number, because the mean of its divisors is an integer number (106110861337545).

Almost surely, 2^{212221722675089} is an apocalyptic number.

It is an amenable number.

212221722675089 is a deficient number, since it is larger than the sum of its proper divisors (1).

212221722675089 is an equidigital number, since it uses as much as digits as its factorization.

212221722675089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6773760, while the sum is 56.

The spelling of 212221722675089 in words is "two hundred twelve trillion, two hundred twenty-one billion, seven hundred twenty-two million, six hundred seventy-five thousand, eighty-nine".