121120101111 has 4 divisors (see below), whose sum is σ = 161493468152. Its totient is φ = 80746734072.

The previous prime is 121120101083. The next prime is 121120101121. The reversal of 121120101111 is 111101021121.

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

It is not a de Polignac number, because 121120101111 - 2⁵ = 121120101079 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 (121120101121) 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, 20186683516 + ... + 20186683521.

It is an arithmetic number, because the mean of its divisors is an integer number (40373367038).

Almost surely, 2^121120101111 is an apocalyptic number.

121120101111 is a deficient number, since it is larger than the sum of its proper divisors (40373367041).

121120101111 is an equidigital number, since it uses as much as digits as its factorization.

121120101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40373367040.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 121120101111 its reverse (111101021121), we get a palindrome (232221122232).

The spelling of 121120101111 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred one thousand, one hundred eleven".