212020312200 has 96 divisors (see below), whose sum is σ = 691855792800. Its totient is φ = 53563023360.

The previous prime is 212020312151. The next prime is 212020312201. The reversal of 212020312200 is 2213020212.

It is a happy number.

It is a super-2 number, since 2×212020312200² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 212020312200.

It is not an unprimeable number, because it can be changed into a prime (212020312201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9287737 + ... + 9310536.

It is an arithmetic number, because the mean of its divisors is an integer number (7206831175).

Almost surely, 2^212020312200 is an apocalyptic number.

212020312200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212020312200 is an abundant number, since it is smaller than the sum of its proper divisors (479835480600).

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

212020312200 is a wasteful number, since it uses less digits than its factorization.

212020312200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18598311 (or 18598302 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 212020312200 its reverse (2213020212), we get a palindrome (214233332412).

The spelling of 212020312200 in words is "two hundred twelve billion, twenty million, three hundred twelve thousand, two hundred".