213122203 has 4 divisors (see below), whose sum is σ = 243568240. Its totient is φ = 182676168.

The previous prime is 213122201. The next prime is 213122213. The reversal of 213122203 is 302221312.

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 213122203 - 2¹ = 213122201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213122201) 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, 15223008 + ... + 15223021.

It is an arithmetic number, because the mean of its divisors is an integer number (60892060).

Almost surely, 2^213122203 is an apocalyptic number.

213122203 is a deficient number, since it is larger than the sum of its proper divisors (30446037).

213122203 is an equidigital number, since it uses as much as digits as its factorization.

213122203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30446036.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 213122203 is about 14598.7055248060. The cubic root of 213122203 is about 597.3234510452.

Adding to 213122203 its reverse (302221312), we get a palindrome (515343515).

The spelling of 213122203 in words is "two hundred thirteen million, one hundred twenty-two thousand, two hundred three".