212110121221100 has 18 divisors (see below), whose sum is σ = 460278963050004. Its totient is φ = 84844048488400.

The previous prime is 212110121221093. The next prime is 212110121221109. The reversal of 212110121221100 is 1122121011212.

It is not an unprimeable number, because it can be changed into a prime (212110121221109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1060550606006 + ... + 1060550606205.

It is an arithmetic number, because the mean of its divisors is an integer number (25571053502778).

Almost surely, 2^{212110121221100} is an apocalyptic number.

212110121221100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212110121221100 is an abundant number, since it is smaller than the sum of its proper divisors (248168841828904).

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

212110121221100 is a wasteful number, since it uses less digits than its factorization.

212110121221100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121101212225 (or 2121101212218 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 212110121221100 its reverse (1122121011212), we get a palindrome (213232242232312).

The spelling of 212110121221100 in words is "two hundred twelve trillion, one hundred ten billion, one hundred twenty-one million, two hundred twenty-one thousand, one hundred".