1224022213 has 2 divisors, whose sum is σ = 1224022214. Its totient is φ = 1224022212.

The previous prime is 1224022207. The next prime is 1224022243. The reversal of 1224022213 is 3122204221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 656486884 + 567535329 = 25622^2 + 23823^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224022213 - 2⁵ = 1224022181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224022243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612011106 + 612011107.

It is an arithmetic number, because the mean of its divisors is an integer number (612011107).

Almost surely, 2^1224022213 is an apocalyptic number.

It is an amenable number.

1224022213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224022213 is an equidigital number, since it uses as much as digits as its factorization.

1224022213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 1224022213 is about 34986.0288258042. The cubic root of 1224022213 is about 1069.7027191136.

Adding to 1224022213 its reverse (3122204221), we get a palindrome (4346226434).

It can be divided in two parts, 12240 and 22213, that added together give a triangular number (34453 = T₂₆₂).

The spelling of 1224022213 in words is "one billion, two hundred twenty-four million, twenty-two thousand, two hundred thirteen".