1223210689 has 2 divisors, whose sum is σ = 1223210690. Its totient is φ = 1223210688.

The previous prime is 1223210663. The next prime is 1223210693. The reversal of 1223210689 is 9860123221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1173747600 + 49463089 = 34260^2 + 7033^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223210689 - 2⁷ = 1223210561 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223210629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611605344 + 611605345.

It is an arithmetic number, because the mean of its divisors is an integer number (611605345).

Almost surely, 2^1223210689 is an apocalyptic number.

It is an amenable number.

1223210689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223210689 is an equidigital number, since it uses as much as digits as its factorization.

1223210689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 1223210689 is about 34974.4290732529. The cubic root of 1223210689 is about 1069.4662633429.

The spelling of 1223210689 in words is "one billion, two hundred twenty-three million, two hundred ten thousand, six hundred eighty-nine".