162136221 has 8 divisors (see below), whose sum is σ = 232811040. Its totient is φ = 99776112.

The previous prime is 162136207. The next prime is 162136237. The reversal of 162136221 is 122631261.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 162136221 - 2¹⁵ = 162103453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 162136191 and 162136200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162136621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078631 + ... + 2078708.

It is an arithmetic number, because the mean of its divisors is an integer number (29101380).

Almost surely, 2^162136221 is an apocalyptic number.

It is an amenable number.

162136221 is a deficient number, since it is larger than the sum of its proper divisors (70674819).

162136221 is a wasteful number, since it uses less digits than its factorization.

162136221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4157355.

The product of its digits is 864, while the sum is 24.

The square root of 162136221 is about 12733.2722031691. The cubic root of 162136221 is about 545.2889313289.

Adding to 162136221 its reverse (122631261), we get a palindrome (284767482).

The spelling of 162136221 in words is "one hundred sixty-two million, one hundred thirty-six thousand, two hundred twenty-one".