22171111064 has 8 divisors (see below), whose sum is σ = 41570833260. Its totient is φ = 11085555528.

The previous prime is 22171111063. The next prime is 22171111069. The reversal of 22171111064 is 46011117122.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22171111063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1385694434 + ... + 1385694449.

Almost surely, 2^22171111064 is an apocalyptic number.

It is an amenable number.

22171111064 is a deficient number, since it is larger than the sum of its proper divisors (19399722196).

22171111064 is a wasteful number, since it uses less digits than its factorization.

22171111064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771388889 (or 2771388885 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 26.

Adding to 22171111064 its reverse (46011117122), we get a palindrome (68182228186).

The spelling of 22171111064 in words is "twenty-two billion, one hundred seventy-one million, one hundred eleven thousand, sixty-four".