1224334221 has 24 divisors (see below), whose sum is σ = 1799151072. Its totient is φ = 734472000.

The previous prime is 1224334207. The next prime is 1224334231.

It is a happy number.

1224334221 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1224334221 - 2¹⁵ = 1224301453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1224334191 and 1224334200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224334231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 334815 + ... + 338451.

It is an arithmetic number, because the mean of its divisors is an integer number (74964628).

Almost surely, 2^1224334221 is an apocalyptic number.

1224334221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1224334221 is a deficient number, since it is larger than the sum of its proper divisors (574816851).

1224334221 is a wasteful number, since it uses less digits than its factorization.

1224334221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853 (or 3752 counting only the distinct ones).

The product of its digits is 2304, while the sum is 24.

The square root of 1224334221 is about 34990.4875787692. The cubic root of 1224334221 is about 1069.7936018465.

It can be divided in two parts, 12243 and 34221, that added together give a palindrome (46464).

The spelling of 1224334221 in words is "one billion, two hundred twenty-four million, three hundred thirty-four thousand, two hundred twenty-one".