21922905164161 has 8 divisors (see below), whose sum is σ = 21988485700544. Its totient is φ = 21857388643440.

The previous prime is 21922905164101. The next prime is 21922905164179. The reversal of 21922905164161 is 16146150922912.

It is a happy number.

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 21922905164161 - 2¹¹ = 21922905162113 is a prime.

It is a super-2 number, since 2×21922905164161² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21922905164101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15317925 + ... + 16687858.

It is an arithmetic number, because the mean of its divisors is an integer number (2748560712568).

Almost surely, 2^{21922905164161} is an apocalyptic number.

It is an amenable number.

21922905164161 is a deficient number, since it is larger than the sum of its proper divisors (65580536383).

21922905164161 is a wasteful number, since it uses less digits than its factorization.

21922905164161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32007831.

The product of its (nonzero) digits is 466560, while the sum is 49.

The spelling of 21922905164161 in words is "twenty-one trillion, nine hundred twenty-two billion, nine hundred five million, one hundred sixty-four thousand, one hundred sixty-one".