212012212100 has 36 divisors (see below), whose sum is σ = 495456234084. Its totient is φ = 78281431680.

The previous prime is 212012212099. The next prime is 212012212129. The reversal of 212012212100 is 1212210212.

212012212100 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 8546262916 + 203465949184 = 92446^2 + 451072^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 81541859 + ... + 81544458.

It is an arithmetic number, because the mean of its divisors is an integer number (13762673169).

Almost surely, 2^212012212100 is an apocalyptic number.

212012212100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212012212100 is an abundant number, since it is smaller than the sum of its proper divisors (283444021984).

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

212012212100 is a wasteful number, since it uses less digits than its factorization.

212012212100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163086344 (or 163086337 counting only the distinct ones).

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

Adding to 212012212100 its reverse (1212210212), we get a palindrome (213224422312).

The spelling of 212012212100 in words is "two hundred twelve billion, twelve million, two hundred twelve thousand, one hundred".