1224215471 has 2 divisors, whose sum is σ = 1224215472. Its totient is φ = 1224215470.

The previous prime is 1224215413. The next prime is 1224215477. The reversal of 1224215471 is 1745124221.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1224215471 - 2²⁶ = 1157106607 is a prime.

It is a super-3 number, since 3×1224215471³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1224215477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612107735 + 612107736.

It is an arithmetic number, because the mean of its divisors is an integer number (612107736).

Almost surely, 2^1224215471 is an apocalyptic number.

1224215471 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224215471 is an equidigital number, since it uses as much as digits as its factorization.

1224215471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4480, while the sum is 29.

The square root of 1224215471 is about 34988.7906478632. The cubic root of 1224215471 is about 1069.7590137698.

Adding to 1224215471 its reverse (1745124221), we get a palindrome (2969339692).

The spelling of 1224215471 in words is "one billion, two hundred twenty-four million, two hundred fifteen thousand, four hundred seventy-one".