122231100989 has 2 divisors, whose sum is σ = 122231100990. Its totient is φ = 122231100988.

The previous prime is 122231100947. The next prime is 122231100991. The reversal of 122231100989 is 989001132221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70455739225 + 51775361764 = 265435^2 + 227542^2 .

It is a cyclic number.

It is not a de Polignac number, because 122231100989 - 2¹² = 122231096893 is a prime.

Together with 122231100991, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122231102989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61115550494 + 61115550495.

It is an arithmetic number, because the mean of its divisors is an integer number (61115550495).

Almost surely, 2^122231100989 is an apocalyptic number.

It is an amenable number.

122231100989 is a deficient number, since it is larger than the sum of its proper divisors (1).

122231100989 is an equidigital number, since it uses as much as digits as its factorization.

122231100989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 38.

The spelling of 122231100989 in words is "one hundred twenty-two billion, two hundred thirty-one million, one hundred thousand, nine hundred eighty-nine".