23016121 has 4 divisors (see below), whose sum is σ = 23025744. Its totient is φ = 23006500.

The previous prime is 23016067. The next prime is 23016127. The reversal of 23016121 is 12161032.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 23016121 - 2²¹ = 20918969 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23016095 and 23016104.

It is not an unprimeable number, because it can be changed into a prime (23016127) 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, 1866 + ... + 7036.

It is an arithmetic number, because the mean of its divisors is an integer number (5756436).

Almost surely, 2^23016121 is an apocalyptic number.

It is an amenable number.

23016121 is a deficient number, since it is larger than the sum of its proper divisors (9623).

23016121 is an equidigital number, since it uses as much as digits as its factorization.

23016121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9622.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 23016121 is about 4797.5119593389. The cubic root of 23016121 is about 284.4531259162.

Adding to 23016121 its reverse (12161032), we get a palindrome (35177153).

The spelling of 23016121 in words is "twenty-three million, sixteen thousand, one hundred twenty-one".