213203201212243 has 4 divisors (see below), whose sum is σ = 232585310413368. Its totient is φ = 193821092011120.

The previous prime is 213203201212241. The next prime is 213203201212279. The reversal of 213203201212243 is 342212102302312.

It is a happy number.

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 213203201212243 - 2¹ = 213203201212241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (213203201212241) 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, 9691054600546 + ... + 9691054600567.

It is an arithmetic number, because the mean of its divisors is an integer number (58146327603342).

Almost surely, 2^{213203201212243} is an apocalyptic number.

213203201212243 is a deficient number, since it is larger than the sum of its proper divisors (19382109201125).

213203201212243 is a wasteful number, since it uses less digits than its factorization.

213203201212243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19382109201124.

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 213203201212243 its reverse (342212102302312), we get a palindrome (555415303514555).

The spelling of 213203201212243 in words is "two hundred thirteen trillion, two hundred three billion, two hundred one million, two hundred twelve thousand, two hundred forty-three".