1222247458 has 4 divisors (see below), whose sum is σ = 1833371190. Its totient is φ = 611123728.

The previous prime is 1222247443. The next prime is 1222247461. The reversal of 1222247458 is 8547422221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8547422221 = 13 ⋅657494017.

It can be written as a sum of positive squares in only one way, i.e., 1218219409 + 4028049 = 34903^2 + 2007^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305561863 + ... + 305561866.

Almost surely, 2^1222247458 is an apocalyptic number.

1222247458 is a deficient number, since it is larger than the sum of its proper divisors (611123732).

1222247458 is an equidigital number, since it uses as much as digits as its factorization.

1222247458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611123731.

The product of its digits is 71680, while the sum is 37.

The square root of 1222247458 is about 34960.6558576924. The cubic root of 1222247458 is about 1069.1854685501.

Adding to 1222247458 its reverse (8547422221), we get a palindrome (9769669679).

The spelling of 1222247458 in words is "one billion, two hundred twenty-two million, two hundred forty-seven thousand, four hundred fifty-eight".