23210020111 has 4 divisors (see below), whose sum is σ = 23357854792. Its totient is φ = 23062185432.

The previous prime is 23210020073. The next prime is 23210020121. The reversal of 23210020111 is 11102001232.

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 23210020111 - 2¹⁷ = 23209889039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23210020091 and 23210020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23210020121) 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, 73917105 + ... + 73917418.

It is an arithmetic number, because the mean of its divisors is an integer number (5839463698).

Almost surely, 2^23210020111 is an apocalyptic number.

23210020111 is a deficient number, since it is larger than the sum of its proper divisors (147834681).

23210020111 is a wasteful number, since it uses less digits than its factorization.

23210020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147834680.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 23210020111 its reverse (11102001232), we get a palindrome (34312021343).

The spelling of 23210020111 in words is "twenty-three billion, two hundred ten million, twenty thousand, one hundred eleven".