1321134224 has 20 divisors (see below), whose sum is σ = 2560392300. Its totient is φ = 660387840.

The previous prime is 1321134197. The next prime is 1321134229. The reversal of 1321134224 is 4224311231.

It can be written as a sum of positive squares in 2 ways, for example, as 971444224 + 349690000 = 31168^2 + 18700^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1321134224.

It is not an unprimeable number, because it can be changed into a prime (1321134229) 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, 65504 + ... + 83264.

It is an arithmetic number, because the mean of its divisors is an integer number (128019615).

Almost surely, 2^1321134224 is an apocalyptic number.

It is an amenable number.

1321134224 is a deficient number, since it is larger than the sum of its proper divisors (1239258076).

1321134224 is a wasteful number, since it uses less digits than its factorization.

1321134224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22418 (or 22412 counting only the distinct ones).

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

The square root of 1321134224 is about 36347.4101415768. The cubic root of 1321134224 is about 1097.2754124187.

Adding to 1321134224 its reverse (4224311231), we get a palindrome (5545445455).

The spelling of 1321134224 in words is "one billion, three hundred twenty-one million, one hundred thirty-four thousand, two hundred twenty-four".