214666440021 has 12 divisors (see below), whose sum is σ = 338262269280. Its totient is φ = 130100872680.

The previous prime is 214666440019. The next prime is 214666440041. The reversal of 214666440021 is 120044666412.

It is not a de Polignac number, because 214666440021 - 2¹ = 214666440019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214666440041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1084173841 + ... + 1084174038.

It is an arithmetic number, because the mean of its divisors is an integer number (28188522440).

Almost surely, 2^214666440021 is an apocalyptic number.

It is an amenable number.

214666440021 is a deficient number, since it is larger than the sum of its proper divisors (123595829259).

214666440021 is a wasteful number, since it uses less digits than its factorization.

214666440021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2168347896 (or 2168347893 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 214666440021 in words is "two hundred fourteen billion, six hundred sixty-six million, four hundred forty thousand, twenty-one".