23102012221 has 4 divisors (see below), whose sum is σ = 23198673600. Its totient is φ = 23005350844.

The previous prime is 23102012183. The next prime is 23102012237. The reversal of 23102012221 is 12221020132.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23102012221 - 2¹⁷ = 23101881149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23102012195 and 23102012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23102012321) 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, 48330331 + ... + 48330808.

It is an arithmetic number, because the mean of its divisors is an integer number (5799668400).

Almost surely, 2^23102012221 is an apocalyptic number.

It is an amenable number.

23102012221 is a deficient number, since it is larger than the sum of its proper divisors (96661379).

23102012221 is an equidigital number, since it uses as much as digits as its factorization.

23102012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96661378.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 23102012221 its reverse (12221020132), we get a palindrome (35323032353).

The spelling of 23102012221 in words is "twenty-three billion, one hundred two million, twelve thousand, two hundred twenty-one".