1213321332 has 24 divisors (see below), whose sum is σ = 2831920000. Its totient is φ = 404320896.

The previous prime is 1213321303. The next prime is 1213321381. The reversal of 1213321332 is 2331233121.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1213321299 and 1213321308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33669 + ... + 59667.

Almost surely, 2^1213321332 is an apocalyptic number.

1213321332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1213321332 is an abundant number, since it is smaller than the sum of its proper divisors (1618598668).

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

1213321332 is a wasteful number, since it uses less digits than its factorization.

1213321332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29895 (or 29893 counting only the distinct ones).

The product of its digits is 648, while the sum is 21.

The square root of 1213321332 is about 34832.7623366279. The cubic root of 1213321332 is about 1066.5763374463.

Adding to 1213321332 its reverse (2331233121), we get a palindrome (3544554453).

The spelling of 1213321332 in words is "one billion, two hundred thirteen million, three hundred twenty-one thousand, three hundred thirty-two".