213212210233 has 4 divisors (see below), whose sum is σ = 232595138448. Its totient is φ = 193829282020.

The previous prime is 213212210221. The next prime is 213212210261. The reversal of 213212210233 is 332012212312.

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 not a de Polignac number, because 213212210233 - 2⁵ = 213212210201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213212210203) 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, 9691464091 + ... + 9691464112.

It is an arithmetic number, because the mean of its divisors is an integer number (58148784612).

Almost surely, 2^213212210233 is an apocalyptic number.

It is an amenable number.

213212210233 is a deficient number, since it is larger than the sum of its proper divisors (19382928215).

213212210233 is a wasteful number, since it uses less digits than its factorization.

213212210233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19382928214.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 213212210233 its reverse (332012212312), we get a palindrome (545224422545).

The spelling of 213212210233 in words is "two hundred thirteen billion, two hundred twelve million, two hundred ten thousand, two hundred thirty-three".