162221572013 has 4 divisors (see below), whose sum is σ = 164880942108. Its totient is φ = 159562201920.

The previous prime is 162221571977. The next prime is 162221572033. The reversal of 162221572013 is 310275122261.

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 84883074409 + 77338497604 = 291347^2 + 278098^2 .

It is a cyclic number.

It is not a de Polignac number, because 162221572013 - 2³⁶ = 93502095277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162221572033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1329684956 + ... + 1329685077.

It is an arithmetic number, because the mean of its divisors is an integer number (41220235527).

Almost surely, 2^162221572013 is an apocalyptic number.

It is an amenable number.

162221572013 is a deficient number, since it is larger than the sum of its proper divisors (2659370095).

162221572013 is an equidigital number, since it uses as much as digits as its factorization.

162221572013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2659370094.

The product of its (nonzero) digits is 10080, while the sum is 32.

Adding to 162221572013 its reverse (310275122261), we get a palindrome (472496694274).

The spelling of 162221572013 in words is "one hundred sixty-two billion, two hundred twenty-one million, five hundred seventy-two thousand, thirteen".