12101331112 has 32 divisors (see below), whose sum is σ = 24469993800. Its totient is φ = 5577318144.

The previous prime is 12101331103. The next prime is 12101331139. The reversal of 12101331112 is 21113310121.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7484672196 + 4616658916 = 86514^2 + 67946^2 .

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, 8323 + ... + 155794.

Almost surely, 2^12101331112 is an apocalyptic number.

It is an amenable number.

12101331112 is an abundant number, since it is smaller than the sum of its proper divisors (12368662688).

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

12101331112 is a wasteful number, since it uses less digits than its factorization.

12101331112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164845 (or 164841 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 12101331112 its reverse (21113310121), we get a palindrome (33214641233).

The spelling of 12101331112 in words is "twelve billion, one hundred one million, three hundred thirty-one thousand, one hundred twelve".