12271745112 has 64 divisors (see below), whose sum is σ = 33519657600. Its totient is φ = 3713015040.

The previous prime is 12271745107. The next prime is 12271745147. The reversal of 12271745112 is 21154717221.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138708 + ... + 209244.

It is an arithmetic number, because the mean of its divisors is an integer number (523744650).

Almost surely, 2^12271745112 is an apocalyptic number.

12271745112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12271745112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16759828800).

12271745112 is an abundant number, since it is smaller than the sum of its proper divisors (21247912488).

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

12271745112 is a wasteful number, since it uses less digits than its factorization.

12271745112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71216 (or 71212 counting only the distinct ones).

The product of its digits is 7840, while the sum is 33.

The spelling of 12271745112 in words is "twelve billion, two hundred seventy-one million, seven hundred forty-five thousand, one hundred twelve".