13212143321 has 32 divisors (see below), whose sum is σ = 15131424000. Its totient is φ = 11447993088.

The previous prime is 13212143291. The next prime is 13212143339. The reversal of 13212143321 is 12334121231.

It is a cyclic number.

It is not a de Polignac number, because 13212143321 - 2¹⁴ = 13212126937 is a prime.

It is a super-2 number, since 2×13212143321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13212193321) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3710540 + ... + 3714098.

It is an arithmetic number, because the mean of its divisors is an integer number (472857000).

Almost surely, 2^13212143321 is an apocalyptic number.

It is an amenable number.

13212143321 is a deficient number, since it is larger than the sum of its proper divisors (1919280679).

13212143321 is a wasteful number, since it uses less digits than its factorization.

13212143321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3873.

The product of its digits is 864, while the sum is 23.

Adding to 13212143321 its reverse (12334121231), we get a palindrome (25546264552).

The spelling of 13212143321 in words is "thirteen billion, two hundred twelve million, one hundred forty-three thousand, three hundred twenty-one".