12271440500 has 48 divisors (see below), whose sum is σ = 29237277888. Its totient is φ = 4462340000.

The previous prime is 12271440499. The next prime is 12271440521. The reversal of 12271440500 is 504417221.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 12271440500.

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, 1110086 + ... + 1121085.

It is an arithmetic number, because the mean of its divisors is an integer number (609109956).

Almost surely, 2^12271440500 is an apocalyptic number.

12271440500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12271440500 is an abundant number, since it is smaller than the sum of its proper divisors (16965837388).

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

12271440500 is a wasteful number, since it uses less digits than its factorization.

12271440500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2231201 (or 2231189 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

Adding to 12271440500 its reverse (504417221), we get a palindrome (12775857721).

The spelling of 12271440500 in words is "twelve billion, two hundred seventy-one million, four hundred forty thousand, five hundred".