13213030212121 has 4 divisors (see below), whose sum is σ = 13268314857600. Its totient is φ = 13157745566644.

The previous prime is 13213030212101. The next prime is 13213030212133. The reversal of 13213030212121 is 12121203031231.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 13213030212121 - 2⁵ = 13213030212089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13213030212092 and 13213030212101.

It is not an unprimeable number, because it can be changed into a prime (13213030212101) 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, 27642322381 + ... + 27642322858.

It is an arithmetic number, because the mean of its divisors is an integer number (3317078714400).

Almost surely, 2^{13213030212121} is an apocalyptic number.

It is an amenable number.

13213030212121 is a deficient number, since it is larger than the sum of its proper divisors (55284645479).

13213030212121 is an equidigital number, since it uses as much as digits as its factorization.

13213030212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55284645478.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 13213030212121 its reverse (12121203031231), we get a palindrome (25334233243352).

The spelling of 13213030212121 in words is "thirteen trillion, two hundred thirteen billion, thirty million, two hundred twelve thousand, one hundred twenty-one".