1223211079 has 2 divisors, whose sum is σ = 1223211080. Its totient is φ = 1223211078.

The previous prime is 1223211043. The next prime is 1223211131. The reversal of 1223211079 is 9701123221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1223211079 - 2⁹ = 1223210567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223211029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611605539 + 611605540.

It is an arithmetic number, because the mean of its divisors is an integer number (611605540).

Almost surely, 2^1223211079 is an apocalyptic number.

1223211079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223211079 is an equidigital number, since it uses as much as digits as its factorization.

1223211079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 1223211079 is about 34974.4346487545. The cubic root of 1223211079 is about 1069.4663770033.

The spelling of 1223211079 in words is "one billion, two hundred twenty-three million, two hundred eleven thousand, seventy-nine".