121120120100111 has 16 divisors (see below), whose sum is σ = 132356736288000. Its totient is φ = 109921134148800.

The previous prime is 121120120100087. The next prime is 121120120100117. The reversal of 121120120100111 is 111001021021121.

It is a cyclic number.

It is not a de Polignac number, because 121120120100111 - 2⁴⁶ = 50751375922447 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 (121120120100117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 177041060 + ... + 177723878.

It is an arithmetic number, because the mean of its divisors is an integer number (8272296018000).

Almost surely, 2^{121120120100111} is an apocalyptic number.

121120120100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121120120100111 is a deficient number, since it is larger than the sum of its proper divisors (11236616187889).

121120120100111 is a wasteful number, since it uses less digits than its factorization.

121120120100111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710350.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121120120100111 its reverse (111001021021121), we get a palindrome (232121141121232).

It can be divided in two parts, 1211201 and 20100111, that added together give a palindrome (21311312).

The spelling of 121120120100111 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred twenty million, one hundred thousand, one hundred eleven".