212122102100 has 36 divisors (see below), whose sum is σ = 466131624000. Its totient is φ = 83774801760.

The previous prime is 212122102099. The next prime is 212122102103. The reversal of 212122102100 is 1201221212.

212122102100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122102103) 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 11 ways as a sum of consecutive naturals, for example, 13417550 + ... + 13433349.

Almost surely, 2^212122102100 is an apocalyptic number.

212122102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122102100 is an abundant number, since it is smaller than the sum of its proper divisors (254009521900).

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

212122102100 is a wasteful number, since it uses less digits than its factorization.

212122102100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26850992 (or 26850985 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 212122102100 its reverse (1201221212), we get a palindrome (213323323312).

The spelling of 212122102100 in words is "two hundred twelve billion, one hundred twenty-two million, one hundred two thousand, one hundred".