121673181 has 16 divisors (see below), whose sum is σ = 185561600. Its totient is φ = 69469488.

The previous prime is 121673161. The next prime is 121673257. The reversal of 121673181 is 181376121.

It is not a de Polignac number, because 121673181 - 2⁷ = 121673053 is a prime.

It is a super-2 number, since 2×121673181² = 29608725949317522, which contains 22 as substring.

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121673141) 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, 44430 + ... + 47088.

It is an arithmetic number, because the mean of its divisors is an integer number (11597600).

Almost surely, 2^121673181 is an apocalyptic number.

It is an amenable number.

121673181 is a deficient number, since it is larger than the sum of its proper divisors (63888419).

121673181 is a wasteful number, since it uses less digits than its factorization.

121673181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4848.

The product of its digits is 2016, while the sum is 30.

The square root of 121673181 is about 11030.5566949271. The cubic root of 121673181 is about 495.5242970419.

The spelling of 121673181 in words is "one hundred twenty-one million, six hundred seventy-three thousand, one hundred eighty-one".