214215021 has 12 divisors (see below), whose sum is σ = 309560160. Its totient is φ = 142746120.

The previous prime is 214214951. The next prime is 214215109. The reversal of 214215021 is 120512412.

214215021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 214215021 - 2¹⁷ = 214083949 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 214214985 and 214215003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214215821) 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, 24990 + ... + 32448.

It is an arithmetic number, because the mean of its divisors is an integer number (25796680).

Almost surely, 2^214215021 is an apocalyptic number.

It is an amenable number.

214215021 is a deficient number, since it is larger than the sum of its proper divisors (95345139).

214215021 is a wasteful number, since it uses less digits than its factorization.

214215021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10656 (or 10653 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 214215021 is about 14636.0862596529. The cubic root of 214215021 is about 598.3426679660.

Adding to 214215021 its reverse (120512412), we get a palindrome (334727433).

The spelling of 214215021 in words is "two hundred fourteen million, two hundred fifteen thousand, twenty-one".