1504221223 has 2 divisors, whose sum is σ = 1504221224. Its totient is φ = 1504221222.

The previous prime is 1504221193. The next prime is 1504221233. The reversal of 1504221223 is 3221224051.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3221224051) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1504221223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1504221194 and 1504221203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1504221233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 752110611 + 752110612.

It is an arithmetic number, because the mean of its divisors is an integer number (752110612).

Almost surely, 2^1504221223 is an apocalyptic number.

1504221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1504221223 is an equidigital number, since it uses as much as digits as its factorization.

1504221223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1504221223 is about 38784.2909307364. The cubic root of 1504221223 is about 1145.7870355353.

Adding to 1504221223 its reverse (3221224051), we get a palindrome (4725445274).

The spelling of 1504221223 in words is "one billion, five hundred four million, two hundred twenty-one thousand, two hundred twenty-three".