22112221011100 has 72 divisors (see below), whose sum is σ = 52347350055168. Its totient is φ = 8040547684800.

The previous prime is 22112221011077. The next prime is 22112221011107. The reversal of 22112221011100 is 111012221122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22112221011107) 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, 35510637 + ... + 36127963.

It is an arithmetic number, because the mean of its divisors is an integer number (727046528544).

Almost surely, 2^{22112221011100} is an apocalyptic number.

22112221011100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22112221011100 is an abundant number, since it is smaller than the sum of its proper divisors (30235129044068).

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

22112221011100 is a wasteful number, since it uses less digits than its factorization.

22112221011100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649915 (or 649908 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 22112221011100 its reverse (111012221122), we get a palindrome (22223233232222).

The spelling of 22112221011100 in words is "twenty-two trillion, one hundred twelve billion, two hundred twenty-one million, eleven thousand, one hundred".