212123214 has 24 divisors (see below), whose sum is σ = 470290392. Its totient is φ = 69063120.

The previous prime is 212123203. The next prime is 212123237. The reversal of 212123214 is 412321212.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 136257 + ... + 137804.

It is an arithmetic number, because the mean of its divisors is an integer number (19595433).

Almost surely, 2^212123214 is an apocalyptic number.

212123214 is an abundant number, since it is smaller than the sum of its proper divisors (258167178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212123214 is a wasteful number, since it uses less digits than its factorization.

212123214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 274112 (or 274109 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 212123214 is about 14564.4503500819. The cubic root of 212123214 is about 596.3886910208.

Adding to 212123214 its reverse (412321212), we get a palindrome (624444426).

The spelling of 212123214 in words is "two hundred twelve million, one hundred twenty-three thousand, two hundred fourteen".