213414221243 has 4 divisors (see below), whose sum is σ = 213673534608. Its totient is φ = 213154907880.

The previous prime is 213414221239. The next prime is 213414221249. The reversal of 213414221243 is 342122414312.

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

It is a cyclic number.

It is not a de Polignac number, because 213414221243 - 2² = 213414221239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213414221249) 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, 129655448 + ... + 129657093.

It is an arithmetic number, because the mean of its divisors is an integer number (53418383652).

Almost surely, 2^213414221243 is an apocalyptic number.

213414221243 is a deficient number, since it is larger than the sum of its proper divisors (259313365).

213414221243 is an equidigital number, since it uses as much as digits as its factorization.

213414221243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259313364.

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

Adding to 213414221243 its reverse (342122414312), we get a palindrome (555536635555).

The spelling of 213414221243 in words is "two hundred thirteen billion, four hundred fourteen million, two hundred twenty-one thousand, two hundred forty-three".