213240214121 has 16 divisors (see below), whose sum is σ = 241588393728. Its totient is φ = 186520395600.

The previous prime is 213240214093. The next prime is 213240214163. The reversal of 213240214121 is 121412042312.

213240214121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 213240214121 - 2¹⁰ = 213240213097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213240214921) 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 15 ways as a sum of consecutive naturals, for example, 3332675 + ... + 3396056.

It is an arithmetic number, because the mean of its divisors is an integer number (15099274608).

Almost surely, 2^213240214121 is an apocalyptic number.

It is an amenable number.

213240214121 is a deficient number, since it is larger than the sum of its proper divisors (28348179607).

213240214121 is a wasteful number, since it uses less digits than its factorization.

213240214121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6728852.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 213240214121 its reverse (121412042312), we get a palindrome (334652256433).

The spelling of 213240214121 in words is "two hundred thirteen billion, two hundred forty million, two hundred fourteen thousand, one hundred twenty-one".