22001011100 has 72 divisors (see below), whose sum is σ = 50561847168. Its totient is φ = 8292081600.

The previous prime is 22001011099. The next prime is 22001011117. The reversal of 22001011100 is 111010022.

It is a congruent number.

It is an unprimeable number.

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, 82715 + ... + 225485.

Almost surely, 2^22001011100 is an apocalyptic number.

22001011100 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 22001011100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25280923584).

22001011100 is an abundant number, since it is smaller than the sum of its proper divisors (28560836068).

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

22001011100 is a wasteful number, since it uses less digits than its factorization.

22001011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142875 (or 142868 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 22001011100 its reverse (111010022), we get a palindrome (22112021122).

The spelling of 22001011100 in words is "twenty-two billion, one million, eleven thousand, one hundred".