1224213332 has 24 divisors (see below), whose sum is σ = 2173058664. Its totient is φ = 603389952.

The previous prime is 1224213329. The next prime is 1224213409. The reversal of 1224213332 is 2333124221.

It can be written as a sum of positive squares in 4 ways, for example, as 233600656 + 990612676 = 15284^2 + 31474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1224213298 and 1224213307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93578 + ... + 105854.

It is an arithmetic number, because the mean of its divisors is an integer number (90544111).

Almost surely, 2^1224213332 is an apocalyptic number.

It is an amenable number.

1224213332 is a deficient number, since it is larger than the sum of its proper divisors (948845332).

1224213332 is a wasteful number, since it uses less digits than its factorization.

1224213332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12635 (or 12633 counting only the distinct ones).

The product of its digits is 1728, while the sum is 23.

The square root of 1224213332 is about 34988.7600809174. The cubic root of 1224213332 is about 1069.7583907271.

Adding to 1224213332 its reverse (2333124221), we get a palindrome (3557337553).

The spelling of 1224213332 in words is "one billion, two hundred twenty-four million, two hundred thirteen thousand, three hundred thirty-two".