2011322100 has 72 divisors (see below), whose sum is σ = 5824314720. Its totient is φ = 535902080.

The previous prime is 2011322087. The next prime is 2011322107. The reversal of 2011322100 is 12231102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011322107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 510739 + ... + 514661.

It is an arithmetic number, because the mean of its divisors is an integer number (80893260).

Almost surely, 2^2011322100 is an apocalyptic number.

2011322100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2011322100 is an abundant number, since it is smaller than the sum of its proper divisors (3812992620).

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

2011322100 is a wasteful number, since it uses less digits than its factorization.

2011322100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5649 (or 5642 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2011322100 is about 44847.7658306409. The cubic root of 2011322100 is about 1262.2940696044.

Adding to 2011322100 its reverse (12231102), we get a palindrome (2023553202).

The spelling of 2011322100 in words is "two billion, eleven million, three hundred twenty-two thousand, one hundred".