1294221223 has 2 divisors, whose sum is σ = 1294221224. Its totient is φ = 1294221222.

The previous prime is 1294221221. The next prime is 1294221277. The reversal of 1294221223 is 3221224921.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1294221223 - 2¹ = 1294221221 is a prime.

Together with 1294221221, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1294221191 and 1294221200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1294221221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 647110611 + 647110612.

It is an arithmetic number, because the mean of its divisors is an integer number (647110612).

Almost surely, 2^1294221223 is an apocalyptic number.

1294221223 is a deficient number, since it is larger than the sum of its proper divisors (1).

1294221223 is an equidigital number, since it uses as much as digits as its factorization.

1294221223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 28.

The square root of 1294221223 is about 35975.2862810013. The cubic root of 1294221223 is about 1089.7733229501.

The spelling of 1294221223 in words is "one billion, two hundred ninety-four million, two hundred twenty-one thousand, two hundred twenty-three".