1213223029 has 2 divisors, whose sum is σ = 1213223030. Its totient is φ = 1213223028.

The previous prime is 1213222949. The next prime is 1213223047. The reversal of 1213223029 is 9203223121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1122116004 + 91107025 = 33498^2 + 9545^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213223029 - 2¹³ = 1213214837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1213222994 and 1213223012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213221029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 606611514 + 606611515.

It is an arithmetic number, because the mean of its divisors is an integer number (606611515).

Almost surely, 2^1213223029 is an apocalyptic number.

It is an amenable number.

1213223029 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213223029 is an equidigital number, since it uses as much as digits as its factorization.

1213223029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 1213223029 is about 34831.3512370680. The cubic root of 1213223029 is about 1066.5475320830.

The spelling of 1213223029 in words is "one billion, two hundred thirteen million, two hundred twenty-three thousand, twenty-nine".