213122214 has 24 divisors (see below), whose sum is σ = 462165912. Its totient is φ = 70979040.

The previous prime is 213122213. The next prime is 213122237. The reversal of 213122214 is 412221312.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19297 + ... + 28259.

It is an arithmetic number, because the mean of its divisors is an integer number (19256913).

Almost surely, 2^213122214 is an apocalyptic number.

213122214 is an abundant number, since it is smaller than the sum of its proper divisors (249043698).

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

213122214 is a wasteful number, since it uses less digits than its factorization.

213122214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10292 (or 10289 counting only the distinct ones).

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

The square root of 213122214 is about 14598.7059015517. The cubic root of 213122214 is about 597.3234613219.

Adding to 213122214 its reverse (412221312), we get a palindrome (625343526).

The spelling of 213122214 in words is "two hundred thirteen million, one hundred twenty-two thousand, two hundred fourteen".