12256100 has 18 divisors (see below), whose sum is σ = 26595954. Its totient is φ = 4902400.

The previous prime is 12256087. The next prime is 12256103. The reversal of 12256100 is 165221.

It can be written as a sum of positive squares in 3 ways, for example, as 2383936 + 9872164 = 1544^2 + 3142^2 .

It is a super-3 number, since 3×12256100³ (a number of 22 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (12256103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 61181 + ... + 61380.

It is an arithmetic number, because the mean of its divisors is an integer number (1477553).

Almost surely, 2^12256100 is an apocalyptic number.

12256100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12256100 is an abundant number, since it is smaller than the sum of its proper divisors (14339854).

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

12256100 is a wasteful number, since it uses less digits than its factorization.

12256100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122575 (or 122568 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 12256100 is about 3500.8713201145. The cubic root of 12256100 is about 230.5600717383.

The spelling of 12256100 in words is "twelve million, two hundred fifty-six thousand, one hundred".