1224421331 has 8 divisors (see below), whose sum is σ = 1411723104. Its totient is φ = 1040215680.

The previous prime is 1224421309. The next prime is 1224421333. The reversal of 1224421331 is 1331244221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1224421331 - 2¹⁴ = 1224404947 is a prime.

It is a super-2 number, since 2×1224421331² = 2998415191615623122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1224421297 and 1224421306.

It is not an unprimeable number, because it can be changed into a prime (1224421333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 773180 + ... + 774761.

It is an arithmetic number, because the mean of its divisors is an integer number (176465388).

Almost surely, 2^1224421331 is an apocalyptic number.

1224421331 is a deficient number, since it is larger than the sum of its proper divisors (187301773).

1224421331 is a wasteful number, since it uses less digits than its factorization.

1224421331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1548061.

The product of its digits is 1152, while the sum is 23.

The square root of 1224421331 is about 34991.7323235075. The cubic root of 1224421331 is about 1069.8189727812.

Adding to 1224421331 its reverse (1331244221), we get a palindrome (2555665552).

The spelling of 1224421331 in words is "one billion, two hundred twenty-four million, four hundred twenty-one thousand, three hundred thirty-one".