12126881 has 8 divisors (see below), whose sum is σ = 13218240. Its totient is φ = 11058192.

The previous prime is 12126869. The next prime is 12126887. The reversal of 12126881 is 18862121.

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 12126881 - 2¹⁸ = 11864737 is a prime.

It is a super-2 number, since 2×12126881² = 294122485576322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12126887) 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, 4541 + ... + 6698.

It is an arithmetic number, because the mean of its divisors is an integer number (1652280).

Almost surely, 2^12126881 is an apocalyptic number.

It is an amenable number.

12126881 is a deficient number, since it is larger than the sum of its proper divisors (1091359).

12126881 is a wasteful number, since it uses less digits than its factorization.

12126881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11335.

The product of its digits is 1536, while the sum is 29.

The square root of 12126881 is about 3482.3671546809. The cubic root of 12126881 is about 229.7469239031.

The spelling of 12126881 in words is "twelve million, one hundred twenty-six thousand, eight hundred eighty-one".