1321011224 has 16 divisors (see below), whose sum is σ = 2667426720. Its totient is φ = 609697440.

The previous prime is 1321011217. The next prime is 1321011227. The reversal of 1321011224 is 4221101231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321011227) 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 3 ways as a sum of consecutive naturals, for example, 6350912 + ... + 6351119.

It is an arithmetic number, because the mean of its divisors is an integer number (166714170).

Almost surely, 2^1321011224 is an apocalyptic number.

It is an amenable number.

1321011224 is an abundant number, since it is smaller than the sum of its proper divisors (1346415496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1321011224 is a wasteful number, since it uses less digits than its factorization.

1321011224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12702050 (or 12702046 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1321011224 is about 36345.7180971844. The cubic root of 1321011224 is about 1097.2413585828.

Adding to 1321011224 its reverse (4221101231), we get a palindrome (5542112455).

The spelling of 1321011224 in words is "one billion, three hundred twenty-one million, eleven thousand, two hundred twenty-four".