121103011011 has 4 divisors (see below), whose sum is σ = 161470681352. Its totient is φ = 80735340672.

The previous prime is 121103010991. The next prime is 121103011039. The reversal of 121103011011 is 110110301121.

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

It is not a de Polignac number, because 121103011011 - 2⁵ = 121103010979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121103011111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20183835166 + ... + 20183835171.

It is an arithmetic number, because the mean of its divisors is an integer number (40367670338).

Almost surely, 2^121103011011 is an apocalyptic number.

121103011011 is a deficient number, since it is larger than the sum of its proper divisors (40367670341).

121103011011 is an equidigital number, since it uses as much as digits as its factorization.

121103011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40367670340.

The product of its (nonzero) digits is 6, while the sum is 12.

Adding to 121103011011 its reverse (110110301121), we get a palindrome (231213312132).

The spelling of 121103011011 in words is "one hundred twenty-one billion, one hundred three million, eleven thousand, eleven".