212100110102100 has 288 divisors, whose sum is σ = 673802304892416. Its totient is φ = 51085159257600.

The previous prime is 212100110102099. The next prime is 212100110102131. The reversal of 212100110102100 is 1201011001212.

212100110102100 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6757562607 + ... + 6757593993.

It is an arithmetic number, because the mean of its divisors is an integer number (2339591336432).

Almost surely, 2^{212100110102100} is an apocalyptic number.

212100110102100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212100110102100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336901152446208).

212100110102100 is an abundant number, since it is smaller than the sum of its proper divisors (461702194790316).

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

212100110102100 is a wasteful number, since it uses less digits than its factorization.

212100110102100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44615 (or 44608 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 212100110102100 its reverse (1201011001212), we get a palindrome (213301121103312).

The spelling of 212100110102100 in words is "two hundred twelve trillion, one hundred billion, one hundred ten million, one hundred two thousand, one hundred".