203211120013 has 4 divisors (see below), whose sum is σ = 221684858208. Its totient is φ = 184737381820.

The previous prime is 203211120011. The next prime is 203211120023. The reversal of 203211120013 is 310021112302.

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 a cyclic number.

It is not a de Polignac number, because 203211120013 - 2¹ = 203211120011 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203211120011) 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, 9236869081 + ... + 9236869102.

It is an arithmetic number, because the mean of its divisors is an integer number (55421214552).

Almost surely, 2^203211120013 is an apocalyptic number.

It is an amenable number.

203211120013 is a deficient number, since it is larger than the sum of its proper divisors (18473738195).

203211120013 is a wasteful number, since it uses less digits than its factorization.

203211120013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18473738194.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 203211120013 its reverse (310021112302), we get a palindrome (513232232315).

The spelling of 203211120013 in words is "two hundred three billion, two hundred eleven million, one hundred twenty thousand, thirteen".