201133210123 has 4 divisors (see below), whose sum is σ = 201138052680. Its totient is φ = 201128367568.

The previous prime is 201133210111. The next prime is 201133210177. The reversal of 201133210123 is 321012331102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201133210123 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 201133210123.

It is not an unprimeable number, because it can be changed into a prime (201133210183) 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, 2358433 + ... + 2442226.

It is an arithmetic number, because the mean of its divisors is an integer number (50284513170).

Almost surely, 2^201133210123 is an apocalyptic number.

201133210123 is a deficient number, since it is larger than the sum of its proper divisors (4842557).

201133210123 is an equidigital number, since it uses as much as digits as its factorization.

201133210123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4842556.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 201133210123 its reverse (321012331102), we get a palindrome (522145541225).

The spelling of 201133210123 in words is "two hundred one billion, one hundred thirty-three million, two hundred ten thousand, one hundred twenty-three".