1222185467 has 4 divisors (see below), whose sum is σ = 1222611696. Its totient is φ = 1221759240.

The previous prime is 1222185449. The next prime is 1222185487. The reversal of 1222185467 is 7645812221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7645812221 = 9109 ⋅839369.

It is a cyclic number.

It is not a de Polignac number, because 1222185467 - 2²⁶ = 1155076603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1222185467.

It is not an unprimeable number, because it can be changed into a prime (1222185487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208784 + ... + 214557.

It is an arithmetic number, because the mean of its divisors is an integer number (305652924).

Almost surely, 2^1222185467 is an apocalyptic number.

1222185467 is a deficient number, since it is larger than the sum of its proper divisors (426229).

1222185467 is an equidigital number, since it uses as much as digits as its factorization.

1222185467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426228.

The product of its digits is 53760, while the sum is 38.

The square root of 1222185467 is about 34959.7692641127. The cubic root of 1222185467 is about 1069.1673922878.

Adding to 1222185467 its reverse (7645812221), we get a palindrome (8867997688).

The spelling of 1222185467 in words is "one billion, two hundred twenty-two million, one hundred eighty-five thousand, four hundred sixty-seven".