203211013211 has 4 divisors (see below), whose sum is σ = 203252736624. Its totient is φ = 203169289800.

The previous prime is 203211013207. The next prime is 203211013241. The reversal of 203211013211 is 112310112302.

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 203211013211 - 2² = 203211013207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203211013211.

It is not an unprimeable number, because it can be changed into a prime (203211013241) 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, 20854400 + ... + 20864141.

It is an arithmetic number, because the mean of its divisors is an integer number (50813184156).

Almost surely, 2^203211013211 is an apocalyptic number.

203211013211 is a deficient number, since it is larger than the sum of its proper divisors (41723413).

203211013211 is an equidigital number, since it uses as much as digits as its factorization.

203211013211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41723412.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 203211013211 its reverse (112310112302), we get a palindrome (315521125513).

Subtracting from 203211013211 its reverse (112310112302), we obtain a palindrome (90900900909).

The spelling of 203211013211 in words is "two hundred three billion, two hundred eleven million, thirteen thousand, two hundred eleven".