210021214 has 16 divisors (see below), whose sum is σ = 339614352. Its totient is φ = 96833088.

The previous prime is 210021209. The next prime is 210021241. The reversal of 210021214 is 412120012.

It is a happy number.

210021214 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 210021194 and 210021203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25602 + ... + 32794.

It is an arithmetic number, because the mean of its divisors is an integer number (21225897).

Almost surely, 2^210021214 is an apocalyptic number.

210021214 is a deficient number, since it is larger than the sum of its proper divisors (129593138).

210021214 is a wasteful number, since it uses less digits than its factorization.

210021214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8331.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 210021214 is about 14492.1086802439. The cubic root of 210021214 is about 594.4122095802.

Adding to 210021214 its reverse (412120012), we get a palindrome (622141226).

The spelling of 210021214 in words is "two hundred ten million, twenty-one thousand, two hundred fourteen".