2212100100 has 324 divisors, whose sum is σ = 8160769344. Its totient is φ = 499685760.

The previous prime is 2212100089. The next prime is 2212100159. The reversal of 2212100100 is 10012122.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 4542057 + ... + 4542543.

Almost surely, 2^2212100100 is an apocalyptic number.

2212100100 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 2212100100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4080384672).

2212100100 is an abundant number, since it is smaller than the sum of its proper divisors (5948669244).

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

2212100100 is a wasteful number, since it uses less digits than its factorization.

2212100100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624 (or 607 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2212100100 is about 47032.9682244274. The cubic root of 2212100100 is about 1302.9715260140.

Adding to 2212100100 its reverse (10012122), we get a palindrome (2222112222).

The spelling of 2212100100 in words is "two billion, two hundred twelve million, one hundred thousand, one hundred".