11212222100 has 72 divisors (see below), whose sum is σ = 24631423488. Its totient is φ = 4429648000.

The previous prime is 11212222097. The next prime is 11212222141. The reversal of 11212222100 is 122221211.

11212222100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 5079197 + ... + 5081403.

It is an arithmetic number, because the mean of its divisors is an integer number (342103104).

Almost surely, 2^11212222100 is an apocalyptic number.

11212222100 is a gapful number since it is divisible by the number (10) 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 11212222100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12315711744).

11212222100 is an abundant number, since it is smaller than the sum of its proper divisors (13419201388).

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

11212222100 is a wasteful number, since it uses less digits than its factorization.

11212222100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2825 (or 2818 counting only the distinct ones).

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

Adding to 11212222100 its reverse (122221211), we get a palindrome (11334443311).

The spelling of 11212222100 in words is "eleven billion, two hundred twelve million, two hundred twenty-two thousand, one hundred".