2112201100 has 72 divisors (see below), whose sum is σ = 4715073216. Its totient is φ = 820800000.

The previous prime is 2112201097. The next prime is 2112201127. The reversal of 2112201100 is 11022112.

It is a super-2 number, since 2×2112201100² = 8922786973682420000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1110150 + ... + 1112050.

It is an arithmetic number, because the mean of its divisors is an integer number (65487128).

Almost surely, 2^2112201100 is an apocalyptic number.

2112201100 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 2112201100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2357536608).

2112201100 is an abundant number, since it is smaller than the sum of its proper divisors (2602872116).

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

2112201100 is a wasteful number, since it uses less digits than its factorization.

2112201100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2227 (or 2220 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 2112201100 is about 45958.6890587623. The cubic root of 2112201100 is about 1283.0544526222.

Adding to 2112201100 its reverse (11022112), we get a palindrome (2123223212).

The spelling of 2112201100 in words is "two billion, one hundred twelve million, two hundred one thousand, one hundred".