23201111203 has 4 divisors (see below), whose sum is σ = 23311069288. Its totient is φ = 23091153120.

The previous prime is 23201111159. The next prime is 23201111293. The reversal of 23201111203 is 30211110232.

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-23201111203 is a prime.

It is a super-2 number, since 2×23201111203² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23201111293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54978726 + ... + 54979147.

It is an arithmetic number, because the mean of its divisors is an integer number (5827767322).

Almost surely, 2^23201111203 is an apocalyptic number.

23201111203 is a deficient number, since it is larger than the sum of its proper divisors (109958085).

23201111203 is a wasteful number, since it uses less digits than its factorization.

23201111203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109958084.

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

Adding to 23201111203 its reverse (30211110232), we get a palindrome (53412221435).

The spelling of 23201111203 in words is "twenty-three billion, two hundred one million, one hundred eleven thousand, two hundred three".