212211200212 has 72 divisors (see below), whose sum is σ = 422857630440. Its totient is φ = 93048806400.

The previous prime is 212211200189. The next prime is 212211200221. The reversal of 212211200212 is 212002112212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15852320836 + 196358879376 = 125906^2 + 443124^2 .

It is a super-4 number, since 4×212211200212⁴ (a number of 46 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1706038 + ... + 1826194.

It is an arithmetic number, because the mean of its divisors is an integer number (5873022645).

Almost surely, 2^212211200212 is an apocalyptic number.

212211200212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

212211200212 is a deficient number, since it is larger than the sum of its proper divisors (210646430228).

212211200212 is a wasteful number, since it uses less digits than its factorization.

212211200212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120313 (or 120300 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212211200212 its reverse (212002112212), we get a palindrome (424213312424).

The spelling of 212211200212 in words is "two hundred twelve billion, two hundred eleven million, two hundred thousand, two hundred twelve".