23112111012 has 12 divisors (see below), whose sum is σ = 53928259056. Its totient is φ = 7704037000.

The previous prime is 23112111007. The next prime is 23112111023. The reversal of 23112111012 is 21011121132.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 23112110982 and 23112111000.

It is an unprimeable number.

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, 963004614 + ... + 963004637.

It is an arithmetic number, because the mean of its divisors is an integer number (4494021588).

Almost surely, 2^23112111012 is an apocalyptic number.

It is an amenable number.

23112111012 is an abundant number, since it is smaller than the sum of its proper divisors (30816148044).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23112111012 is a wasteful number, since it uses less digits than its factorization.

23112111012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926009258 (or 1926009256 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 23112111012 its reverse (21011121132), we get a palindrome (44123232144).

The spelling of 23112111012 in words is "twenty-three billion, one hundred twelve million, one hundred eleven thousand, twelve".