211232120203 has 4 divisors (see below), whose sum is σ = 227480744848. Its totient is φ = 194983495560.

The previous prime is 211232120167. The next prime is 211232120243. The reversal of 211232120203 is 302021232112.

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 211232120203 - 2¹³ = 211232112011 is a prime.

It is a super-2 number, since 2×211232120203² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211232120243) 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, 8124312303 + ... + 8124312328.

It is an arithmetic number, because the mean of its divisors is an integer number (56870186212).

Almost surely, 2^211232120203 is an apocalyptic number.

211232120203 is a deficient number, since it is larger than the sum of its proper divisors (16248624645).

211232120203 is a wasteful number, since it uses less digits than its factorization.

211232120203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16248624644.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211232120203 its reverse (302021232112), we get a palindrome (513253352315).

The spelling of 211232120203 in words is "two hundred eleven billion, two hundred thirty-two million, one hundred twenty thousand, two hundred three".