214100021 has 8 divisors (see below), whose sum is σ = 217311360. Its totient is φ = 210896352.

The previous prime is 214100017. The next prime is 214100101. The reversal of 214100021 is 120001412.

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 214100021 - 2² = 214100017 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 = 214099975 and 214100011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214100221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79190 + ... + 81848.

It is an arithmetic number, because the mean of its divisors is an integer number (27163920).

Almost surely, 2^214100021 is an apocalyptic number.

It is an amenable number.

214100021 is a deficient number, since it is larger than the sum of its proper divisors (3211339).

214100021 is a wasteful number, since it uses less digits than its factorization.

214100021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 214100021 is about 14632.1570863629. The cubic root of 214100021 is about 598.2355766215.

Adding to 214100021 its reverse (120001412), we get a palindrome (334101433).

The spelling of 214100021 in words is "two hundred fourteen million, one hundred thousand, twenty-one".