23012121133 has 2 divisors, whose sum is σ = 23012121134. Its totient is φ = 23012121132.

The previous prime is 23012121079. The next prime is 23012121163. The reversal of 23012121133 is 33112121032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22945584484 + 66536649 = 151478^2 + 8157^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23012121133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23012121133.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23012121163) 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, 11506060566 + 11506060567.

It is an arithmetic number, because the mean of its divisors is an integer number (11506060567).

Almost surely, 2^23012121133 is an apocalyptic number.

It is an amenable number.

23012121133 is a deficient number, since it is larger than the sum of its proper divisors (1).

23012121133 is an equidigital number, since it uses as much as digits as its factorization.

23012121133 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 19.

Adding to 23012121133 its reverse (33112121032), we get a palindrome (56124242165).

The spelling of 23012121133 in words is "twenty-three billion, twelve million, one hundred twenty-one thousand, one hundred thirty-three".