121103310111 has 32 divisors (see below), whose sum is σ = 189253628928. Its totient is φ = 67437500160.

The previous prime is 121103310089. The next prime is 121103310137. The reversal of 121103310111 is 111013301121.

It is not a de Polignac number, because 121103310111 - 2⁶ = 121103310047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121103310311) 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, 684421 + ... + 842993.

It is an arithmetic number, because the mean of its divisors is an integer number (5914175904).

Almost surely, 2^121103310111 is an apocalyptic number.

121103310111 is a deficient number, since it is larger than the sum of its proper divisors (68150318817).

121103310111 is a wasteful number, since it uses less digits than its factorization.

121103310111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159511.

The product of its (nonzero) digits is 18, while the sum is 15.

Adding to 121103310111 its reverse (111013301121), we get a palindrome (232116611232).

The spelling of 121103310111 in words is "one hundred twenty-one billion, one hundred three million, three hundred ten thousand, one hundred eleven".