121849311 has 4 divisors (see below), whose sum is σ = 162465752. Its totient is φ = 81232872.

The previous prime is 121849289. The next prime is 121849327. The reversal of 121849311 is 113948121.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 121849311 - 2¹¹ = 121847263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121849361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20308216 + ... + 20308221.

It is an arithmetic number, because the mean of its divisors is an integer number (40616438).

Almost surely, 2^121849311 is an apocalyptic number.

121849311 is a deficient number, since it is larger than the sum of its proper divisors (40616441).

121849311 is an equidigital number, since it uses as much as digits as its factorization.

121849311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40616440.

The product of its digits is 1728, while the sum is 30.

The square root of 121849311 is about 11038.5375390040. The cubic root of 121849311 is about 495.7632831922.

The spelling of 121849311 in words is "one hundred twenty-one million, eight hundred forty-nine thousand, three hundred eleven".