211222200203212 has 24 divisors (see below), whose sum is σ = 403242750973440. Its totient is φ = 96010003199760.

The previous prime is 211222200203123. The next prime is 211222200203213. The reversal of 211222200203212 is 212302002222112.

It is a happy number.

It is a super-2 number, since 2×211222200203212² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (211222200203213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89562489 + ... + 91890607.

It is an arithmetic number, because the mean of its divisors is an integer number (16801781290560).

Almost surely, 2^{211222200203212} is an apocalyptic number.

211222200203212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

211222200203212 is a deficient number, since it is larger than the sum of its proper divisors (192020550770228).

211222200203212 is a wasteful number, since it uses less digits than its factorization.

211222200203212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4390101 (or 4390099 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211222200203212 its reverse (212302002222112), we get a palindrome (423524202425324).

The spelling of 211222200203212 in words is "two hundred eleven trillion, two hundred twenty-two billion, two hundred million, two hundred three thousand, two hundred twelve".