13212303032421 has 6 divisors (see below), whose sum is σ = 19084437713510. Its totient is φ = 8808202021608.

The previous prime is 13212303032389. The next prime is 13212303032443. The reversal of 13212303032421 is 12423030321231.

13212303032421 is a `hidden beast` number, since 1 + 3 + 2 + 1 + 230 + 3 + 0 + 3 + 2 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6909742992321 + 6302560040100 = 2628639^2 + 2510490^2 .

It is not a de Polignac number, because 13212303032421 - 2⁵ = 13212303032389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13212303032021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734016835126 + ... + 734016835143.

Almost surely, 2^{13212303032421} is an apocalyptic number.

It is an amenable number.

13212303032421 is a deficient number, since it is larger than the sum of its proper divisors (5872134681089).

13212303032421 is a wasteful number, since it uses less digits than its factorization.

13212303032421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1468033670275 (or 1468033670272 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 13212303032421 its reverse (12423030321231), we get a palindrome (25635333353652).

The spelling of 13212303032421 in words is "thirteen trillion, two hundred twelve billion, three hundred three million, thirty-two thousand, four hundred twenty-one".