12271173530 has 128 divisors (see below), whose sum is σ = 28095123456. Its totient is φ = 3748147200.

The previous prime is 12271173487. The next prime is 12271173533. The reversal of 12271173530 is 3537117221.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12271173533) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 10550729 + ... + 10551891.

It is an arithmetic number, because the mean of its divisors is an integer number (219493152).

Almost surely, 2^12271173530 is an apocalyptic number.

12271173530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12271173530 is an abundant number, since it is smaller than the sum of its proper divisors (15823949926).

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

12271173530 is a wasteful number, since it uses less digits than its factorization.

12271173530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 8820, while the sum is 32.

The spelling of 12271173530 in words is "twelve billion, two hundred seventy-one million, one hundred seventy-three thousand, five hundred thirty".