23121133033 has 4 divisors (see below), whose sum is σ = 24481199700. Its totient is φ = 21761066368.

The previous prime is 23121133027. The next prime is 23121133037. The reversal of 23121133033 is 33033112132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16538731609 + 6582401424 = 128603^2 + 81132^2 .

It is a cyclic number.

It is not a de Polignac number, because 23121133033 - 2⁵ = 23121133001 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23121132995 and 23121133013.

It is not an unprimeable number, because it can be changed into a prime (23121133037) 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 in 3 ways as a sum of consecutive naturals, for example, 680033308 + ... + 680033341.

It is an arithmetic number, because the mean of its divisors is an integer number (6120299925).

Almost surely, 2^23121133033 is an apocalyptic number.

It is an amenable number.

23121133033 is a deficient number, since it is larger than the sum of its proper divisors (1360066667).

23121133033 is a wasteful number, since it uses less digits than its factorization.

23121133033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1360066666.

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 23121133033 its reverse (33033112132), we get a palindrome (56154245165).

The spelling of 23121133033 in words is "twenty-three billion, one hundred twenty-one million, one hundred thirty-three thousand, thirty-three".