212122020210100 has 216 divisors, whose sum is σ = 621427379727168. Its totient is φ = 61030111334400.

The previous prime is 212122020210077. The next prime is 212122020210103. The reversal of 212122020210100 is 1012020221212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212122020210103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 80202589 + ... + 82805188.

It is an arithmetic number, because the mean of its divisors is an integer number (2876978609848).

Almost surely, 2^{212122020210100} is an apocalyptic number.

212122020210100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212122020210100 is an abundant number, since it is smaller than the sum of its proper divisors (409305359517068).

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

212122020210100 is a wasteful number, since it uses less digits than its factorization.

212122020210100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163007835 (or 163007815 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 212122020210100 its reverse (1012020221212), we get a palindrome (213134040431312).

The spelling of 212122020210100 in words is "two hundred twelve trillion, one hundred twenty-two billion, twenty million, two hundred ten thousand, one hundred".