163220133 has 8 divisors (see below), whose sum is σ = 217784448. Its totient is φ = 108734624.

The previous prime is 163220129. The next prime is 163220147. The reversal of 163220133 is 331022361.

163220133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 163220133 - 2² = 163220129 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163220173) 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, 14685 + ... + 23282.

It is an arithmetic number, because the mean of its divisors is an integer number (27223056).

Almost surely, 2^163220133 is an apocalyptic number.

It is an amenable number.

163220133 is a deficient number, since it is larger than the sum of its proper divisors (54564315).

163220133 is a wasteful number, since it uses less digits than its factorization.

163220133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39403.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 163220133 is about 12775.7634996896. The cubic root of 163220133 is about 546.5013542298.

Adding to 163220133 its reverse (331022361), we get a palindrome (494242494).

The spelling of 163220133 in words is "one hundred sixty-three million, two hundred twenty thousand, one hundred thirty-three".