214130021 has 4 divisors (see below), whose sum is σ = 244720032. Its totient is φ = 183540012.

The previous prime is 214129991. The next prime is 214130027. The reversal of 214130021 is 120031412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 214130021 - 2²² = 209935717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 214129978 and 214130005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214130027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15294995 + ... + 15295008.

It is an arithmetic number, because the mean of its divisors is an integer number (61180008).

Almost surely, 2^214130021 is an apocalyptic number.

It is an amenable number.

214130021 is a deficient number, since it is larger than the sum of its proper divisors (30590011).

214130021 is an equidigital number, since it uses as much as digits as its factorization.

214130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30590010.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 214130021 is about 14633.1821898041. The cubic root of 214130021 is about 598.2635171903.

Adding to 214130021 its reverse (120031412), we get a palindrome (334161433).

The spelling of 214130021 in words is "two hundred fourteen million, one hundred thirty thousand, twenty-one".