22011100551 has 24 divisors (see below), whose sum is σ = 35530120080. Its totient is φ = 13014691200.

The previous prime is 22011100519. The next prime is 22011100567. The reversal of 22011100551 is 15500111022.

22011100551 is a `hidden beast` number, since 2 + 2 + 0 + 1 + 110 + 0 + 551 = 666.

It is not a de Polignac number, because 22011100551 - 2⁵ = 22011100519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22011100751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2707336 + ... + 2715453.

It is an arithmetic number, because the mean of its divisors is an integer number (1480421670).

Almost surely, 2^22011100551 is an apocalyptic number.

22011100551 is a deficient number, since it is larger than the sum of its proper divisors (13519019529).

22011100551 is a wasteful number, since it uses less digits than its factorization.

22011100551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5422847 (or 5422844 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

Adding to 22011100551 its reverse (15500111022), we get a palindrome (37511211573).

The spelling of 22011100551 in words is "twenty-two billion, eleven million, one hundred thousand, five hundred fifty-one".