1224213331 has 8 divisors (see below), whose sum is σ = 1357399728. Its totient is φ = 1094676000.

The previous prime is 1224213329. The next prime is 1224213409. The reversal of 1224213331 is 1333124221.

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

It is not a de Polignac number, because 1224213331 - 2¹ = 1224213329 is a prime.

It is a super-2 number, since 2×1224213331² = 2997396559596231122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224213031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911560 + ... + 912901.

It is an arithmetic number, because the mean of its divisors is an integer number (169674966).

Almost surely, 2^1224213331 is an apocalyptic number.

1224213331 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1224213331 is a deficient number, since it is larger than the sum of its proper divisors (133186397).

1224213331 is a wasteful number, since it uses less digits than its factorization.

1224213331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1824533.

The product of its digits is 864, while the sum is 22.

The square root of 1224213331 is about 34988.7600666271. The cubic root of 1224213331 is about 1069.7583904358.

Adding to 1224213331 its reverse (1333124221), we get a palindrome (2557337552).

The spelling of 1224213331 in words is "one billion, two hundred twenty-four million, two hundred thirteen thousand, three hundred thirty-one".