12023111112 has 32 divisors (see below), whose sum is σ = 30110637600. Its totient is φ = 4000655744.

The previous prime is 12023111101. The next prime is 12023111123. The reversal of 12023111112 is 21111132021.

It is an interprime number because it is at equal distance from previous prime (12023111101) and next prime (12023111123).

It is a super-2 number, since 2×12023111112² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12023111091 and 12023111100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 426558 + ... + 453869.

It is an arithmetic number, because the mean of its divisors is an integer number (940957425).

Almost surely, 2^12023111112 is an apocalyptic number.

12023111112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12023111112 is an abundant number, since it is smaller than the sum of its proper divisors (18087526488).

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

12023111112 is a wasteful number, since it uses less digits than its factorization.

12023111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 881005 (or 881001 counting only the distinct ones).

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

Adding to 12023111112 its reverse (21111132021), we get a palindrome (33134243133).

The spelling of 12023111112 in words is "twelve billion, twenty-three million, one hundred eleven thousand, one hundred twelve".