122221201220689 has 2 divisors, whose sum is σ = 122221201220690. Its totient is φ = 122221201220688.

The previous prime is 122221201220683. The next prime is 122221201220693. The reversal of 122221201220689 is 986022102122221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 103048993203025 + 19172208017664 = 10151305^2 + 4378608^2 .

It is a cyclic number.

It is not a de Polignac number, because 122221201220689 - 2²⁷ = 122221067002961 is a prime.

It is not a weakly prime, because it can be changed into another prime (122221201220683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110600610344 + 61110600610345.

It is an arithmetic number, because the mean of its divisors is an integer number (61110600610345).

Almost surely, 2^{122221201220689} is an apocalyptic number.

It is an amenable number.

122221201220689 is a deficient number, since it is larger than the sum of its proper divisors (1).

122221201220689 is an equidigital number, since it uses as much as digits as its factorization.

122221201220689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 122221201220689 in words is "one hundred twenty-two trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty thousand, six hundred eighty-nine".