23212310111 has 4 divisors (see below), whose sum is σ = 23216400312. Its totient is φ = 23208219912.

The previous prime is 23212310087. The next prime is 23212310129. The reversal of 23212310111 is 11101321232.

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 23212310111 - 2³⁴ = 6032440927 is a prime.

It is a super-2 number, since 2×23212310111² (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 23212310111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23212310131) 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, 2036576 + ... + 2047941.

It is an arithmetic number, because the mean of its divisors is an integer number (5804100078).

Almost surely, 2^23212310111 is an apocalyptic number.

23212310111 is a deficient number, since it is larger than the sum of its proper divisors (4090201).

23212310111 is an equidigital number, since it uses as much as digits as its factorization.

23212310111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4090200.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 23212310111 its reverse (11101321232), we get a palindrome (34313631343).

The spelling of 23212310111 in words is "twenty-three billion, two hundred twelve million, three hundred ten thousand, one hundred eleven".