1321224532 has 6 divisors (see below), whose sum is σ = 2312142938. Its totient is φ = 660612264.

The previous prime is 1321224529. The next prime is 1321224533. The reversal of 1321224532 is 2354221231.

It can be written as a sum of positive squares in only one way, i.e., 1150295056 + 170929476 = 33916^2 + 13074^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1321224497 and 1321224506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321224533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165153063 + ... + 165153070.

Almost surely, 2^1321224532 is an apocalyptic number.

It is an amenable number.

1321224532 is a deficient number, since it is larger than the sum of its proper divisors (990918406).

1321224532 is a wasteful number, since it uses less digits than its factorization.

1321224532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330306137 (or 330306135 counting only the distinct ones).

The product of its digits is 2880, while the sum is 25.

The square root of 1321224532 is about 36348.6524096836. The cubic root of 1321224532 is about 1097.3004137871.

Adding to 1321224532 its reverse (2354221231), we get a palindrome (3675445763).

The spelling of 1321224532 in words is "one billion, three hundred twenty-one million, two hundred twenty-four thousand, five hundred thirty-two".