12271081 has 8 divisors (see below), whose sum is σ = 12563424. Its totient is φ = 11982240.

The previous prime is 12271079. The next prime is 12271099. The reversal of 12271081 is 18017221.

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

It is a cyclic number.

It is not a de Polignac number, because 12271081 - 2¹ = 12271079 is a prime.

It is a super-2 number, since 2×12271081² = 301158857817122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12271681) 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, 7026 + ... + 8596.

It is an arithmetic number, because the mean of its divisors is an integer number (1570428).

Almost surely, 2^12271081 is an apocalyptic number.

It is an amenable number.

12271081 is a deficient number, since it is larger than the sum of its proper divisors (292343).

12271081 is a wasteful number, since it uses less digits than its factorization.

12271081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1751.

The product of its (nonzero) digits is 224, while the sum is 22.

The square root of 12271081 is about 3503.0102768904. The cubic root of 12271081 is about 230.6539736612.

The spelling of 12271081 in words is "twelve million, two hundred seventy-one thousand, eighty-one".