212210331 has 8 divisors (see below), whose sum is σ = 283230480. Its totient is φ = 141331872.

The previous prime is 212210329. The next prime is 212210377. The reversal of 212210331 is 133012212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 212210331 - 2¹ = 212210329 is a prime.

It is a super-2 number, since 2×212210331² = 90066449166259122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212210331.

It is not an unprimeable number, because it can be changed into a prime (212210431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31876 + ... + 37953.

It is an arithmetic number, because the mean of its divisors is an integer number (35403810).

Almost surely, 2^212210331 is an apocalyptic number.

212210331 is a deficient number, since it is larger than the sum of its proper divisors (71020149).

212210331 is a wasteful number, since it uses less digits than its factorization.

212210331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70845.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 212210331 is about 14567.4407841597. The cubic root of 212210331 is about 596.4703235803.

Adding to 212210331 its reverse (133012212), we get a palindrome (345222543).

The spelling of 212210331 in words is "two hundred twelve million, two hundred ten thousand, three hundred thirty-one".