23212040111 has 4 divisors (see below), whose sum is σ = 24997581672. Its totient is φ = 21426498552.

The previous prime is 23212040107. The next prime is 23212040123. The reversal of 23212040111 is 11104021232.

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 23212040111 - 2² = 23212040107 is a prime.

It is a super-2 number, since 2×23212040111² (a number of 22 digits) contains 22 as substring.

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 23212040111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212040711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892770761 + ... + 892770786.

It is an arithmetic number, because the mean of its divisors is an integer number (6249395418).

Almost surely, 2^23212040111 is an apocalyptic number.

23212040111 is a deficient number, since it is larger than the sum of its proper divisors (1785541561).

23212040111 is a wasteful number, since it uses less digits than its factorization.

23212040111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1785541560.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 23212040111 its reverse (11104021232), we get a palindrome (34316061343).

The spelling of 23212040111 in words is "twenty-three billion, two hundred twelve million, forty thousand, one hundred eleven".