12511081 has 8 divisors (see below), whose sum is σ = 13674528. Its totient is φ = 11352000.

The previous prime is 12511049. The next prime is 12511087. The reversal of 12511081 is 18011521.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12511081 - 2⁵ = 12511049 is a prime.

It is a super-3 number, since 3×12511081³ (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12511087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9046 + ... + 10336.

It is an arithmetic number, because the mean of its divisors is an integer number (1709316).

Almost surely, 2^12511081 is an apocalyptic number.

12511081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12511081 is a deficient number, since it is larger than the sum of its proper divisors (1163447).

12511081 is a wasteful number, since it uses less digits than its factorization.

12511081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2183.

The product of its (nonzero) digits is 80, while the sum is 19.

The square root of 12511081 is about 3537.1006488366. The cubic root of 12511081 is about 232.1479993541.

It can be divided in two parts, 1251 and 1081, that added together give a palindrome (2332).

The spelling of 12511081 in words is "twelve million, five hundred eleven thousand, eighty-one".