212220200 has 24 divisors (see below), whose sum is σ = 493412430. Its totient is φ = 84888000.

The previous prime is 212220191. The next prime is 212220247. The reversal of 212220200 is 2022212.

It can be written as a sum of positive squares in 3 ways, for example, as 185449924 + 26770276 = 13618^2 + 5174^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 530351 + ... + 530750.

Almost surely, 2^212220200 is an apocalyptic number.

212220200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220200 is an abundant number, since it is smaller than the sum of its proper divisors (281192230).

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

212220200 is a wasteful number, since it uses less digits than its factorization.

212220200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1061117 (or 1061108 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 212220200 is about 14567.7795150805. The cubic root of 212220200 is about 596.4795698697.

Adding to 212220200 its reverse (2022212), we get a palindrome (214242412).

It can be divided in two parts, 2122 and 20200, that added together give a palindrome (22322).

The spelling of 212220200 in words is "two hundred twelve million, two hundred twenty thousand, two hundred".