121045191 has 8 divisors (see below), whose sum is σ = 161522304. Its totient is φ = 80632440.

The previous prime is 121045189. The next prime is 121045193. The reversal of 121045191 is 191540121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121045189) and next prime (121045193).

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

It is not a de Polignac number, because 121045191 - 2¹ = 121045189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121045193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11515 + ... + 19356.

It is an arithmetic number, because the mean of its divisors is an integer number (20190288).

Almost surely, 2^121045191 is an apocalyptic number.

121045191 is a deficient number, since it is larger than the sum of its proper divisors (40477113).

121045191 is a wasteful number, since it uses less digits than its factorization.

121045191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32181.

The product of its (nonzero) digits is 360, while the sum is 24.

The square root of 121045191 is about 11002.0539446051. The cubic root of 121045191 is about 494.6703120430.

The spelling of 121045191 in words is "one hundred twenty-one million, forty-five thousand, one hundred ninety-one".