1321220332 has 12 divisors (see below), whose sum is σ = 2341403680. Its totient is φ = 652247856.

The previous prime is 1321220317. The next prime is 1321220359. The reversal of 1321220332 is 2330221231.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2090223 + ... + 2090854.

Almost surely, 2^1321220332 is an apocalyptic number.

It is an amenable number.

1321220332 is a deficient number, since it is larger than the sum of its proper divisors (1020183348).

1321220332 is a wasteful number, since it uses less digits than its factorization.

1321220332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4181160 (or 4181158 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 1321220332 is about 36348.5946358315. The cubic root of 1321220332 is about 1097.2992510610.

Adding to 1321220332 its reverse (2330221231), we get a palindrome (3651441563).

The spelling of 1321220332 in words is "one billion, three hundred twenty-one million, two hundred twenty thousand, three hundred thirty-two".