212313220 has 48 divisors (see below), whose sum is σ = 536376960. Its totient is φ = 68961024.

The previous prime is 212313197. The next prime is 212313251. The reversal of 212313220 is 22313212.

It is a junction number, because it is equal to n+sod(n) for n = 212313194 and 212313203.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37249 + ... + 42568.

It is an arithmetic number, because the mean of its divisors is an integer number (11174520).

Almost surely, 2^212313220 is an apocalyptic number.

212313220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212313220 is an abundant number, since it is smaller than the sum of its proper divisors (324063740).

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

212313220 is a wasteful number, since it uses less digits than its factorization.

212313220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79852 (or 79850 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 212313220 is about 14570.9718275755. The cubic root of 212313220 is about 596.5667064460.

Adding to 212313220 its reverse (22313212), we get a palindrome (234626432).

The spelling of 212313220 in words is "two hundred twelve million, three hundred thirteen thousand, two hundred twenty".