168011121 has 8 divisors (see below), whose sum is σ = 224302624. Its totient is φ = 111863520.

The previous prime is 168011111. The next prime is 168011147. The reversal of 168011121 is 121110861.

It is a happy number.

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

It is not a de Polignac number, because 168011121 - 2⁵ = 168011089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (168011111) 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, 33220 + ... + 37941.

It is an arithmetic number, because the mean of its divisors is an integer number (28037828).

Almost surely, 2^168011121 is an apocalyptic number.

It is an amenable number.

168011121 is a deficient number, since it is larger than the sum of its proper divisors (56291503).

168011121 is an equidigital number, since it uses as much as digits as its factorization.

168011121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71951.

The product of its (nonzero) digits is 96, while the sum is 21.

The square root of 168011121 is about 12961.9103916051. The cubic root of 168011121 is about 551.7970104027.

Adding to 168011121 its reverse (121110861), we get a palindrome (289121982).

The spelling of 168011121 in words is "one hundred sixty-eight million, eleven thousand, one hundred twenty-one".