23388121 has 2 divisors, whose sum is σ = 23388122. Its totient is φ = 23388120.

The previous prime is 23388119. The next prime is 23388143. The reversal of 23388121 is 12188332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23386896 + 1225 = 4836^2 + 35^2 .

It is a cyclic number.

It is not a de Polignac number, because 23388121 - 2¹ = 23388119 is a prime.

Together with 23388119, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 23388121.

It is not a weakly prime, because it can be changed into another prime (23388191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11694060 + 11694061.

It is an arithmetic number, because the mean of its divisors is an integer number (11694061).

Almost surely, 2^23388121 is an apocalyptic number.

It is an amenable number.

23388121 is a deficient number, since it is larger than the sum of its proper divisors (1).

23388121 is an equidigital number, since it uses as much as digits as its factorization.

23388121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 28.

The square root of 23388121 is about 4836.1266526012. The cubic root of 23388121 is about 285.9774421056.

The spelling of 23388121 in words is "twenty-three million, three hundred eighty-eight thousand, one hundred twenty-one".