163310121 has 16 divisors (see below), whose sum is σ = 260552320. Its totient is φ = 100498320.

The previous prime is 163310117. The next prime is 163310123. The reversal of 163310121 is 121013361.

163310121 is a `hidden beast` number, since 1 + 633 + 10 + 1 + 21 = 666.

It is not a de Polignac number, because 163310121 - 2² = 163310117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 163310094 and 163310103.

It is not an unprimeable number, because it can be changed into a prime (163310123) 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, 232285 + ... + 232986.

It is an arithmetic number, because the mean of its divisors is an integer number (16284520).

Almost surely, 2^163310121 is an apocalyptic number.

It is an amenable number.

163310121 is a deficient number, since it is larger than the sum of its proper divisors (97242199).

163310121 is a wasteful number, since it uses less digits than its factorization.

163310121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465293 (or 465287 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 163310121 is about 12779.2848391450. The cubic root of 163310121 is about 546.6017698013.

Adding to 163310121 its reverse (121013361), we get a palindrome (284323482).

The spelling of 163310121 in words is "one hundred sixty-three million, three hundred ten thousand, one hundred twenty-one".