1222400224 has 12 divisors (see below), whose sum is σ = 2406600504. Its totient is φ = 611200096.

The previous prime is 1222400209. The next prime is 1222400239. The reversal of 1222400224 is 4220042221.

It is an interprime number because it is at equal distance from previous prime (1222400209) and next prime (1222400239).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19099972 + ... + 19100035.

It is an arithmetic number, because the mean of its divisors is an integer number (200550042).

Almost surely, 2^1222400224 is an apocalyptic number.

It is an amenable number.

1222400224 is a deficient number, since it is larger than the sum of its proper divisors (1184200280).

1222400224 is an equidigital number, since it uses as much as digits as its factorization.

1222400224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38200017 (or 38200009 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 1222400224 is about 34962.8406168606. The cubic root of 1222400224 is about 1069.2300117348.

Adding to 1222400224 its reverse (4220042221), we get a palindrome (5442442445).

The spelling of 1222400224 in words is "one billion, two hundred twenty-two million, four hundred thousand, two hundred twenty-four".