1222234557889 has 2 divisors, whose sum is σ = 1222234557890. Its totient is φ = 1222234557888.

The previous prime is 1222234557857. The next prime is 1222234557937. The reversal of 1222234557889 is 9887554322221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1219831891600 + 2402666289 = 1104460^2 + 49017^2 .

It is an emirp because it is prime and its reverse (9887554322221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1222234557889 - 2⁵ = 1222234557857 is a prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1222234527889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611117278944 + 611117278945.

It is an arithmetic number, because the mean of its divisors is an integer number (611117278945).

Almost surely, 2^{1222234557889} is an apocalyptic number.

It is an amenable number.

1222234557889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222234557889 is an equidigital number, since it uses as much as digits as its factorization.

1222234557889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19353600, while the sum is 58.

The spelling of 1222234557889 in words is "one trillion, two hundred twenty-two billion, two hundred thirty-four million, five hundred fifty-seven thousand, eight hundred eighty-nine".