211222200100 has 72 divisors (see below), whose sum is σ = 510856990560. Its totient is φ = 75333726720.

The previous prime is 211222200029. The next prime is 211222200103. The reversal of 211222200100 is 1002222112.

It is a happy number.

It is a super-2 number, since 2×211222200100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (211222200103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3237394 + ... + 3301993.

It is an arithmetic number, because the mean of its divisors is an integer number (7095235980).

Almost surely, 2^211222200100 is an apocalyptic number.

211222200100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211222200100 is an abundant number, since it is smaller than the sum of its proper divisors (299634790460).

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

211222200100 is a wasteful number, since it uses less digits than its factorization.

211222200100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6539437 (or 6539430 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 211222200100 its reverse (1002222112), we get a palindrome (212224422212).

It can be divided in two parts, 21122 and 2200100, that added together give a palindrome (2221222).

The spelling of 211222200100 in words is "two hundred eleven billion, two hundred twenty-two million, two hundred thousand, one hundred".