121120012111111 has 4 divisors (see below), whose sum is σ = 130436936119672. Its totient is φ = 111803088102552.

The previous prime is 121120012111103. The next prime is 121120012111121. The reversal of 121120012111111 is 111111210021121.

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

It is a cyclic number.

It is not a de Polignac number, because 121120012111111 - 2³ = 121120012111103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120012111121) 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, 4658462004261 + ... + 4658462004286.

It is an arithmetic number, because the mean of its divisors is an integer number (32609234029918).

Almost surely, 2^{121120012111111} is an apocalyptic number.

121120012111111 is a deficient number, since it is larger than the sum of its proper divisors (9316924008561).

121120012111111 is an equidigital number, since it uses as much as digits as its factorization.

121120012111111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9316924008560.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121120012111111 its reverse (111111210021121), we get a palindrome (232231222132232).

The spelling of 121120012111111 in words is "one hundred twenty-one trillion, one hundred twenty billion, twelve million, one hundred eleven thousand, one hundred eleven".