22145221105 has 64 divisors (see below), whose sum is σ = 32503680000. Its totient is φ = 14138892288.

The previous prime is 22145221097. The next prime is 22145221151. The reversal of 22145221105 is 50112254122.

It is a cyclic number.

It is not a de Polignac number, because 22145221105 - 2³ = 22145221097 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22145221105.

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 63 ways as a sum of consecutive naturals, for example, 38919261 + ... + 38919829.

It is an arithmetic number, because the mean of its divisors is an integer number (507870000).

Almost surely, 2^22145221105 is an apocalyptic number.

It is an amenable number.

22145221105 is a deficient number, since it is larger than the sum of its proper divisors (10358458895).

22145221105 is a wasteful number, since it uses less digits than its factorization.

22145221105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186.

The product of its (nonzero) digits is 1600, while the sum is 25.

Adding to 22145221105 its reverse (50112254122), we get a palindrome (72257475227).

The spelling of 22145221105 in words is "twenty-two billion, one hundred forty-five million, two hundred twenty-one thousand, one hundred five".