1224332401 has 4 divisors (see below), whose sum is σ = 1296351972. Its totient is φ = 1152312832.

The previous prime is 1224332399. The next prime is 1224332443. The reversal of 1224332401 is 1042334221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 370524001 + 853808400 = 19249^2 + 29220^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224332401 - 2¹ = 1224332399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224335401) 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, 36009760 + ... + 36009793.

It is an arithmetic number, because the mean of its divisors is an integer number (324087993).

Almost surely, 2^1224332401 is an apocalyptic number.

It is an amenable number.

1224332401 is a deficient number, since it is larger than the sum of its proper divisors (72019571).

1224332401 is an equidigital number, since it uses as much as digits as its factorization.

1224332401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72019570.

The product of its (nonzero) digits is 1152, while the sum is 22.

The square root of 1224332401 is about 34990.4615716912. The cubic root of 1224332401 is about 1069.7930717556.

Adding to 1224332401 its reverse (1042334221), we get a palindrome (2266666622).

It can be divided in two parts, 12243 and 32401, that added together give a palindrome (44644).

The spelling of 1224332401 in words is "one billion, two hundred twenty-four million, three hundred thirty-two thousand, four hundred one".