23203212111 has 6 divisors (see below), whose sum is σ = 33515750840. Its totient is φ = 15468808068.

The previous prime is 23203212031. The next prime is 23203212143. The reversal of 23203212111 is 11121230232.

23203212111 is a `hidden beast` number, since 2 + 320 + 321 + 21 + 1 + 1 = 666.

It is not a de Polignac number, because 23203212111 - 2¹⁴ = 23203195727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23203212211) 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 5 ways as a sum of consecutive naturals, for example, 1289067331 + ... + 1289067348.

Almost surely, 2^23203212111 is an apocalyptic number.

23203212111 is a deficient number, since it is larger than the sum of its proper divisors (10312538729).

23203212111 is a wasteful number, since it uses less digits than its factorization.

23203212111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2578134685 (or 2578134682 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23203212111 its reverse (11121230232), we get a palindrome (34324442343).

The spelling of 23203212111 in words is "twenty-three billion, two hundred three million, two hundred twelve thousand, one hundred eleven".