12072081 has 24 divisors (see below), whose sum is σ = 19190304. Its totient is φ = 6726720.

The previous prime is 12072037. The next prime is 12072119. The reversal of 12072081 is 18027021.

12072081 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12072081 - 2¹³ = 12063889 is a prime.

It is a super-2 number, since 2×12072081² = 291470279341122, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12072001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5026 + ... + 7028.

It is an arithmetic number, because the mean of its divisors is an integer number (799596).

Almost surely, 2^12072081 is an apocalyptic number.

It is an amenable number.

12072081 is a deficient number, since it is larger than the sum of its proper divisors (7118223).

12072081 is a wasteful number, since it uses less digits than its factorization.

12072081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2054 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 12072081 is about 3474.4900345231. The cubic root of 12072081 is about 229.4003345467.

The spelling of 12072081 in words is "twelve million, seventy-two thousand, eighty-one".