212244220 has 24 divisors (see below), whose sum is σ = 448183008. Its totient is φ = 84427200.

The previous prime is 212244217. The next prime is 212244233. The reversal of 212244220 is 22442212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25696 + ... + 32935.

It is an arithmetic number, because the mean of its divisors is an integer number (18674292).

Almost surely, 2^212244220 is an apocalyptic number.

212244220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212244220 is an abundant number, since it is smaller than the sum of its proper divisors (235938788).

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

212244220 is a wasteful number, since it uses less digits than its factorization.

212244220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58821 (or 58819 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 212244220 is about 14568.6039138965. The cubic root of 212244220 is about 596.5020730664.

Adding to 212244220 its reverse (22442212), we get a palindrome (234686432).

The spelling of 212244220 in words is "two hundred twelve million, two hundred forty-four thousand, two hundred twenty".