160522720121 has 4 divisors (see below), whose sum is σ = 160582330212. Its totient is φ = 160463110032.

The previous prime is 160522720073. The next prime is 160522720147. The reversal of 160522720121 is 121027225061.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64599338896 + 95923381225 = 254164^2 + 309715^2 .

It is a cyclic number.

It is not a de Polignac number, because 160522720121 - 2²⁶ = 160455611257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (160522720181) 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, 29801006 + ... + 29806391.

It is an arithmetic number, because the mean of its divisors is an integer number (40145582553).

Almost surely, 2^160522720121 is an apocalyptic number.

It is an amenable number.

160522720121 is a deficient number, since it is larger than the sum of its proper divisors (59610091).

160522720121 is an equidigital number, since it uses as much as digits as its factorization.

160522720121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59610090.

The product of its (nonzero) digits is 3360, while the sum is 29.

Adding to 160522720121 its reverse (121027225061), we get a palindrome (281549945182).

The spelling of 160522720121 in words is "one hundred sixty billion, five hundred twenty-two million, seven hundred twenty thousand, one hundred twenty-one".