23110002221 has 4 divisors (see below), whose sum is σ = 23322020700. Its totient is φ = 22897983744.

The previous prime is 23110002211. The next prime is 23110002263. The reversal of 23110002221 is 12220001132.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12213565225 + 10896436996 = 110515^2 + 104386^2 .

It is a cyclic number.

It is not a de Polignac number, because 23110002221 - 2³⁰ = 22036260397 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 23110002196 and 23110002205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23110002211) 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, 106009076 + ... + 106009293.

It is an arithmetic number, because the mean of its divisors is an integer number (5830505175).

Almost surely, 2^23110002221 is an apocalyptic number.

It is an amenable number.

23110002221 is a deficient number, since it is larger than the sum of its proper divisors (212018479).

23110002221 is a wasteful number, since it uses less digits than its factorization.

23110002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212018478.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 23110002221 its reverse (12220001132), we get a palindrome (35330003353).

The spelling of 23110002221 in words is "twenty-three billion, one hundred ten million, two thousand, two hundred twenty-one".