23012303021 has 2 divisors, whose sum is σ = 23012303022. Its totient is φ = 23012303020.

The previous prime is 23012302993. The next prime is 23012303033. The reversal of 23012303021 is 12030321032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22677046921 + 335256100 = 150589^2 + 18310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23012303021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23012303051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11506151510 + 11506151511.

It is an arithmetic number, because the mean of its divisors is an integer number (11506151511).

Almost surely, 2^23012303021 is an apocalyptic number.

It is an amenable number.

23012303021 is a deficient number, since it is larger than the sum of its proper divisors (1).

23012303021 is an equidigital number, since it uses as much as digits as its factorization.

23012303021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 23012303021 its reverse (12030321032), we get a palindrome (35042624053).

The spelling of 23012303021 in words is "twenty-three billion, twelve million, three hundred three thousand, twenty-one".