22071421165 has 8 divisors (see below), whose sum is σ = 26489548800. Its totient is φ = 17654574672.

The previous prime is 22071421159. The next prime is 22071421213. The reversal of 22071421165 is 56112417022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22071421165 - 2³ = 22071421157 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 281965 + ... + 351634.

It is an arithmetic number, because the mean of its divisors is an integer number (3311193600).

Almost surely, 2^22071421165 is an apocalyptic number.

It is an amenable number.

22071421165 is a deficient number, since it is larger than the sum of its proper divisors (4418127635).

22071421165 is an equidigital number, since it uses as much as digits as its factorization.

22071421165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640571.

The product of its (nonzero) digits is 6720, while the sum is 31.

Adding to 22071421165 its reverse (56112417022), we get a palindrome (78183838187).

The spelling of 22071421165 in words is "twenty-two billion, seventy-one million, four hundred twenty-one thousand, one hundred sixty-five".