23121243111 has 8 divisors (see below), whose sum is σ = 30855112704. Its totient is φ = 15400767800.

The previous prime is 23121243059. The next prime is 23121243133. The reversal of 23121243111 is 11134212132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23121243111 - 2¹¹ = 23121241063 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121243151) 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 7 ways as a sum of consecutive naturals, for example, 3344541 + ... + 3351446.

It is an arithmetic number, because the mean of its divisors is an integer number (3856889088).

Almost surely, 2^23121243111 is an apocalyptic number.

23121243111 is a deficient number, since it is larger than the sum of its proper divisors (7733869593).

23121243111 is a wasteful number, since it uses less digits than its factorization.

23121243111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6697141.

The product of its digits is 288, while the sum is 21.

Adding to 23121243111 its reverse (11134212132), we get a palindrome (34255455243).

The spelling of 23121243111 in words is "twenty-three billion, one hundred twenty-one million, two hundred forty-three thousand, one hundred eleven".