121103311 has 4 divisors (see below), whose sum is σ = 138403792. Its totient is φ = 103802832.

The previous prime is 121103293. The next prime is 121103377. The reversal of 121103311 is 113301121.

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

It is not a de Polignac number, because 121103311 - 2⁹ = 121102799 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121103291 and 121103300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8650230 + ... + 8650243.

It is an arithmetic number, because the mean of its divisors is an integer number (34600948).

Almost surely, 2^121103311 is an apocalyptic number.

121103311 is a deficient number, since it is larger than the sum of its proper divisors (17300481).

121103311 is an equidigital number, since it uses as much as digits as its factorization.

121103311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17300480.

The product of its (nonzero) digits is 18, while the sum is 13.

The square root of 121103311 is about 11004.6949526100. The cubic root of 121103311 is about 494.7494715647.

Adding to 121103311 its reverse (113301121), we get a palindrome (234404432).

The spelling of 121103311 in words is "one hundred twenty-one million, one hundred three thousand, three hundred eleven".