160122165721 has 8 divisors (see below), whose sum is σ = 183029665280. Its totient is φ = 137222892288.

The previous prime is 160122165719. The next prime is 160122165787. The reversal of 160122165721 is 127561221061.

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 160122165721 - 2¹ = 160122165719 is a prime.

It is not an unprimeable number, because it can be changed into a prime (160122165701) 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, 2014761 + ... + 2092726.

It is an arithmetic number, because the mean of its divisors is an integer number (22878708160).

Almost surely, 2^160122165721 is an apocalyptic number.

It is an amenable number.

160122165721 is a deficient number, since it is larger than the sum of its proper divisors (22907499559).

160122165721 is an equidigital number, since it uses as much as digits as its factorization.

160122165721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113063.

The product of its (nonzero) digits is 10080, while the sum is 34.

Adding to 160122165721 its reverse (127561221061), we get a palindrome (287683386782).

The spelling of 160122165721 in words is "one hundred sixty billion, one hundred twenty-two million, one hundred sixty-five thousand, seven hundred twenty-one".