13321212 has 24 divisors (see below), whose sum is σ = 31154256. Its totient is φ = 4430208.

The previous prime is 13321211. The next prime is 13321219. The reversal of 13321212 is 21212331.

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 = 13321191 and 13321200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13321211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5688 + ... + 7680.

It is an arithmetic number, because the mean of its divisors is an integer number (1298094).

Almost surely, 2^13321212 is an apocalyptic number.

13321212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13321212 is an abundant number, since it is smaller than the sum of its proper divisors (17833044).

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

13321212 is a wasteful number, since it uses less digits than its factorization.

13321212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2557 (or 2555 counting only the distinct ones).

The product of its digits is 72, while the sum is 15.

The square root of 13321212 is about 3649.8235573792. The cubic root of 13321212 is about 237.0543413643.

Adding to 13321212 its reverse (21212331), we get a palindrome (34533543).

The spelling of 13321212 in words is "thirteen million, three hundred twenty-one thousand, two hundred twelve".