222171424572 has 12 divisors (see below), whose sum is σ = 518399990696. Its totient is φ = 74057141520.

The previous prime is 222171424567. The next prime is 222171424577. The reversal of 222171424572 is 275424171222.

It is an interprime number because it is at equal distance from previous prime (222171424567) and next prime (222171424577).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 222171424572.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222171424577) 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 3 ways as a sum of consecutive naturals, for example, 9257142679 + ... + 9257142702.

Almost surely, 2^222171424572 is an apocalyptic number.

It is an amenable number.

222171424572 is an abundant number, since it is smaller than the sum of its proper divisors (296228566124).

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

222171424572 is a wasteful number, since it uses less digits than its factorization.

222171424572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18514285388 (or 18514285386 counting only the distinct ones).

The product of its digits is 125440, while the sum is 39.

Adding to 222171424572 its reverse (275424171222), we get a palindrome (497595595794).

The spelling of 222171424572 in words is "two hundred twenty-two billion, one hundred seventy-one million, four hundred twenty-four thousand, five hundred seventy-two".