212212111111100 has 36 divisors (see below), whose sum is σ = 466808504156064. Its totient is φ = 83722038353280.

The previous prime is 212212111111093. The next prime is 212212111111103. The reversal of 212212111111100 is 1111111212212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212212111111103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14535068804 + ... + 14535083403.

It is an arithmetic number, because the mean of its divisors is an integer number (12966902893224).

Almost surely, 2^{212212111111100} is an apocalyptic number.

212212111111100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212212111111100 is an abundant number, since it is smaller than the sum of its proper divisors (254596393044964).

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

212212111111100 is a wasteful number, since it uses less digits than its factorization.

212212111111100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29070152294 (or 29070152287 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 212212111111100 its reverse (1111111212212), we get a palindrome (213323222323312).

The spelling of 212212111111100 in words is "two hundred twelve trillion, two hundred twelve billion, one hundred eleven million, one hundred eleven thousand, one hundred".