1224400022 has 4 divisors (see below), whose sum is σ = 1836600036. Its totient is φ = 612200010.

The previous prime is 1224400003. The next prime is 1224400031. The reversal of 1224400022 is 2200044221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2200044221 = 971 ⋅2265751.

It is a congruent number.

It is an unprimeable number.

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, 306100004 + ... + 306100007.

It is an arithmetic number, because the mean of its divisors is an integer number (459150009).

Almost surely, 2^1224400022 is an apocalyptic number.

1224400022 is a deficient number, since it is larger than the sum of its proper divisors (612200014).

1224400022 is an equidigital number, since it uses as much as digits as its factorization.

1224400022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612200013.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1224400022 is about 34991.4278359715. The cubic root of 1224400022 is about 1069.8127666101.

Adding to 1224400022 its reverse (2200044221), we get a palindrome (3424444243).

The spelling of 1224400022 in words is "one billion, two hundred twenty-four million, four hundred thousand, twenty-two".