1224918229 has 2 divisors, whose sum is σ = 1224918230. Its totient is φ = 1224918228.

The previous prime is 1224918197. The next prime is 1224918281. The reversal of 1224918229 is 9228194221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 859076100 + 365842129 = 29310^2 + 19127^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224918229 - 2⁵ = 1224918197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1224918191 and 1224918200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224918329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612459114 + 612459115.

It is an arithmetic number, because the mean of its divisors is an integer number (612459115).

Almost surely, 2^1224918229 is an apocalyptic number.

It is an amenable number.

1224918229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224918229 is an equidigital number, since it uses as much as digits as its factorization.

1224918229 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 40.

The square root of 1224918229 is about 34998.8318233623. The cubic root of 1224918229 is about 1069.9636721588.

The spelling of 1224918229 in words is "one billion, two hundred twenty-four million, nine hundred eighteen thousand, two hundred twenty-nine".