26666121 has 8 divisors (see below), whose sum is σ = 35907264. Its totient is φ = 17601200.

The previous prime is 26666119. The next prime is 26666137. The reversal of 26666121 is 12166662.

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 26666121 - 2¹ = 26666119 is a prime.

It is a super-2 number, since 2×26666121² = 1422164018373282, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (26666111) 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, 43701 + ... + 44306.

It is an arithmetic number, because the mean of its divisors is an integer number (4488408).

Almost surely, 2^26666121 is an apocalyptic number.

It is an amenable number.

26666121 is a deficient number, since it is larger than the sum of its proper divisors (9241143).

26666121 is a wasteful number, since it uses less digits than its factorization.

26666121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88111.

The product of its digits is 5184, while the sum is 30.

The square root of 26666121 is about 5163.9249607251. The cubic root of 26666121 is about 298.7582786289.

The spelling of 26666121 in words is "twenty-six million, six hundred sixty-six thousand, one hundred twenty-one".