214202021 has 4 divisors (see below), whose sum is σ = 233674944. Its totient is φ = 194729100.

The previous prime is 214202003. The next prime is 214202063. The reversal of 214202021 is 120202412.

214202021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 214202021 - 2¹⁰ = 214200997 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 = 214201987 and 214202005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214202071) 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, 9736445 + ... + 9736466.

It is an arithmetic number, because the mean of its divisors is an integer number (58418736).

Almost surely, 2^214202021 is an apocalyptic number.

It is an amenable number.

214202021 is a deficient number, since it is larger than the sum of its proper divisors (19472923).

214202021 is a wasteful number, since it uses less digits than its factorization.

214202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19472922.

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 214202021 is about 14635.6421451196. The cubic root of 214202021 is about 598.3305639096.

Adding to 214202021 its reverse (120202412), we get a palindrome (334404433).

The spelling of 214202021 in words is "two hundred fourteen million, two hundred two thousand, twenty-one".