213242421341 has 4 divisors (see below), whose sum is σ = 213518285532. Its totient is φ = 212966557152.

The previous prime is 213242421323. The next prime is 213242421349. The reversal of 213242421341 is 143124242312.

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

It can be written as a sum of positive squares in 2 ways, for example, as 30361320025 + 182881101316 = 174245^2 + 427646^2 .

It is a cyclic number.

It is not a de Polignac number, because 213242421341 - 2¹⁴ = 213242404957 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 (213242421349) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137930936 + ... + 137932481.

It is an arithmetic number, because the mean of its divisors is an integer number (53379571383).

Almost surely, 2^213242421341 is an apocalyptic number.

It is an amenable number.

213242421341 is a deficient number, since it is larger than the sum of its proper divisors (275864191).

213242421341 is an equidigital number, since it uses as much as digits as its factorization.

213242421341 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275864190.

The product of its digits is 9216, while the sum is 29.

Adding to 213242421341 its reverse (143124242312), we get a palindrome (356366663653).

The spelling of 213242421341 in words is "two hundred thirteen billion, two hundred forty-two million, four hundred twenty-one thousand, three hundred forty-one".