1224400233 has 16 divisors (see below), whose sum is σ = 1867053440. Its totient is φ = 699169536.

The previous prime is 1224400217. The next prime is 1224400237. The reversal of 1224400233 is 3320044221.

It is not a de Polignac number, because 1224400233 - 2⁴ = 1224400217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1224400237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11691 + ... + 50847.

It is an arithmetic number, because the mean of its divisors is an integer number (116690840).

Almost surely, 2^1224400233 is an apocalyptic number.

It is an amenable number.

1224400233 is a deficient number, since it is larger than the sum of its proper divisors (642653207).

1224400233 is a wasteful number, since it uses less digits than its factorization.

1224400233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40656.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 1224400233 is about 34991.4308509955. The cubic root of 1224400233 is about 1069.8128280635.

Adding to 1224400233 its reverse (3320044221), we get a palindrome (4544444454).

The spelling of 1224400233 in words is "one billion, two hundred twenty-four million, four hundred thousand, two hundred thirty-three".