22111405554 has 64 divisors (see below), whose sum is σ = 50739204096. Its totient is φ = 6292750464.

The previous prime is 22111405541. The next prime is 22111405559. The reversal of 22111405554 is 45550411122.

It is not an unprimeable number, because it can be changed into a prime (22111405559) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16662039 + ... + 16663365.

It is an arithmetic number, because the mean of its divisors is an integer number (792800064).

Almost surely, 2^22111405554 is an apocalyptic number.

22111405554 is an abundant number, since it is smaller than the sum of its proper divisors (28627798542).

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

22111405554 is a wasteful number, since it uses less digits than its factorization.

22111405554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599.

The product of its (nonzero) digits is 8000, while the sum is 30.

Adding to 22111405554 its reverse (45550411122), we get a palindrome (67661816676).

The spelling of 22111405554 in words is "twenty-two billion, one hundred eleven million, four hundred five thousand, five hundred fifty-four".