166101121 has 8 divisors (see below), whose sum is σ = 167716800. Its totient is φ = 164493648.

The previous prime is 166101119. The next prime is 166101157. The reversal of 166101121 is 121101661.

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 166101121 - 2¹ = 166101119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166101161) 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, 43335 + ... + 47011.

It is an arithmetic number, because the mean of its divisors is an integer number (20964600).

Almost surely, 2^166101121 is an apocalyptic number.

It is an amenable number.

166101121 is a deficient number, since it is larger than the sum of its proper divisors (1615679).

166101121 is a wasteful number, since it uses less digits than its factorization.

166101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103.

The product of its (nonzero) digits is 72, while the sum is 19.

The square root of 166101121 is about 12888.0223851451. The cubic root of 166101121 is about 549.6980392066.

Adding to 166101121 its reverse (121101661), we get a palindrome (287202782).

The spelling of 166101121 in words is "one hundred sixty-six million, one hundred one thousand, one hundred twenty-one".