23112200021 has 2 divisors, whose sum is σ = 23112200022. Its totient is φ = 23112200020.

The previous prime is 23112200011. The next prime is 23112200051. The reversal of 23112200021 is 12000221132.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17158380100 + 5953819921 = 130990^2 + 77161^2 .

It is a cyclic number.

It is not a de Polignac number, because 23112200021 - 2¹⁰ = 23112198997 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23112199969 and 23112200005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23112200011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11556100010 + 11556100011.

It is an arithmetic number, because the mean of its divisors is an integer number (11556100011).

Almost surely, 2^23112200021 is an apocalyptic number.

It is an amenable number.

23112200021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23112200021 is an equidigital number, since it uses as much as digits as its factorization.

23112200021 is an odious number, because the sum of its binary digits is odd.

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

Adding to 23112200021 its reverse (12000221132), we get a palindrome (35112421153).

The spelling of 23112200021 in words is "twenty-three billion, one hundred twelve million, two hundred thousand, twenty-one".