13203212121211 has 4 divisors (see below), whose sum is σ = 15089385281392. Its totient is φ = 11317038961032.

The previous prime is 13203212121193. The next prime is 13203212121221. The reversal of 13203212121211 is 11212121230231.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 13203212121211 - 2³⁵ = 13168852382843 is a prime.

It is a super-2 number, since 2×13203212121211² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13203212121221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943086580080 + ... + 943086580093.

It is an arithmetic number, because the mean of its divisors is an integer number (3772346320348).

Almost surely, 2^{13203212121211} is an apocalyptic number.

13203212121211 is a deficient number, since it is larger than the sum of its proper divisors (1886173160181).

13203212121211 is an equidigital number, since it uses as much as digits as its factorization.

13203212121211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886173160180.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 13203212121211 its reverse (11212121230231), we get a palindrome (24415333351442).

The spelling of 13203212121211 in words is "thirteen trillion, two hundred three billion, two hundred twelve million, one hundred twenty-one thousand, two hundred eleven".