121172073 has 32 divisors (see below), whose sum is σ = 194752512. Its totient is φ = 66105600.

The previous prime is 121172071. The next prime is 121172083. The reversal of 121172073 is 370271121.

It is not a de Polignac number, because 121172073 - 2¹ = 121172071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121172071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8208 + ... + 17598.

It is an arithmetic number, because the mean of its divisors is an integer number (6086016).

Almost surely, 2^121172073 is an apocalyptic number.

It is an amenable number.

121172073 is a deficient number, since it is larger than the sum of its proper divisors (73580439).

121172073 is a wasteful number, since it uses less digits than its factorization.

121172073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445.

The product of its (nonzero) digits is 588, while the sum is 24.

The square root of 121172073 is about 11007.8187212545. The cubic root of 121172073 is about 494.8430928046.

The spelling of 121172073 in words is "one hundred twenty-one million, one hundred seventy-two thousand, seventy-three".