1321123132 has 12 divisors (see below), whose sum is σ = 2642246320. Its totient is φ = 566195616.

The previous prime is 1321123093. The next prime is 1321123157. The reversal of 1321123132 is 2313211231.

1321123132 is an admirable number.

It is a congruent number.

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, 23591457 + ... + 23591512.

Almost surely, 2^1321123132 is an apocalyptic number.

It is an amenable number.

1321123132 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1321123132 is a wasteful number, since it uses less digits than its factorization.

1321123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47182980 (or 47182978 counting only the distinct ones).

The product of its digits is 216, while the sum is 19.

The square root of 1321123132 is about 36347.2575581707. The cubic root of 1321123132 is about 1097.2723415693.

Adding to 1321123132 its reverse (2313211231), we get a palindrome (3634334363).

The spelling of 1321123132 in words is "one billion, three hundred twenty-one million, one hundred twenty-three thousand, one hundred thirty-two".