160556013221 has 16 divisors (see below), whose sum is σ = 173441606400. Its totient is φ = 148170304128.

The previous prime is 160556013217. The next prime is 160556013271. The reversal of 160556013221 is 122310655061.

It is not a de Polignac number, because 160556013221 - 2² = 160556013217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160556013271) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 823745 + ... + 999833.

It is an arithmetic number, because the mean of its divisors is an integer number (10840100400).

Almost surely, 2^160556013221 is an apocalyptic number.

It is an amenable number.

160556013221 is a deficient number, since it is larger than the sum of its proper divisors (12885593179).

160556013221 is a wasteful number, since it uses less digits than its factorization.

160556013221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177508.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 160556013221 its reverse (122310655061), we get a palindrome (282866668282).

The spelling of 160556013221 in words is "one hundred sixty billion, five hundred fifty-six million, thirteen thousand, two hundred twenty-one".