212020310 has 16 divisors (see below), whose sum is σ = 381958416. Its totient is φ = 84736608.

The previous prime is 212020301. The next prime is 212020349. The reversal of 212020310 is 13020212.

It is a happy number.

It is a super-2 number, since 2×212020310² = 89905223704992200, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212020291 and 212020300.

It is a congruent number.

It is an unprimeable number.

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, 4469 + ... + 21071.

It is an arithmetic number, because the mean of its divisors is an integer number (23872401).

Almost surely, 2^212020310 is an apocalyptic number.

212020310 is a deficient number, since it is larger than the sum of its proper divisors (169938106).

212020310 is a wasteful number, since it uses less digits than its factorization.

212020310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17887.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 212020310 is about 14560.9172101211. The cubic root of 212020310 is about 596.2922365321.

Adding to 212020310 its reverse (13020212), we get a palindrome (225040522).

The spelling of 212020310 in words is "two hundred twelve million, twenty thousand, three hundred ten".