12266271400 has 48 divisors (see below), whose sum is σ = 28780775100. Its totient is φ = 4861486080.

The previous prime is 12266271397. The next prime is 12266271401. The reversal of 12266271400 is 417266221.

It can be written as a sum of positive squares in 6 ways, for example, as 2387104164 + 9879167236 = 48858^2 + 99394^2 .

It is a super-2 number, since 2×12266271400² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12266271401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 259537 + ... + 303136.

Almost surely, 2^12266271400 is an apocalyptic number.

12266271400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12266271400 is an abundant number, since it is smaller than the sum of its proper divisors (16514503700).

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

12266271400 is a wasteful number, since it uses less digits than its factorization.

12266271400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562798 (or 562789 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The spelling of 12266271400 in words is "twelve billion, two hundred sixty-six million, two hundred seventy-one thousand, four hundred".