12010981 has 8 divisors (see below), whose sum is σ = 12479744. Its totient is φ = 11547360.

The previous prime is 12010963. The next prime is 12011009. The reversal of 12010981 is 18901021.

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 12010981 - 2⁹ = 12010469 is a prime.

It is a super-2 number, since 2×12010981² = 288527329164722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12010931) 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, 3865 + ... + 6241.

It is an arithmetic number, because the mean of its divisors is an integer number (1559968).

Almost surely, 2^12010981 is an apocalyptic number.

It is an amenable number.

12010981 is a deficient number, since it is larger than the sum of its proper divisors (468763).

12010981 is a wasteful number, since it uses less digits than its factorization.

12010981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2571.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 12010981 is about 3465.6862235350. The cubic root of 12010981 is about 229.0126611485.

The spelling of 12010981 in words is "twelve million, ten thousand, nine hundred eighty-one".