120111121121121 has 64 divisors (see below), whose sum is σ = 195673279011840. Its totient is φ = 72369874621440.

The previous prime is 120111121121113. The next prime is 120111121121141. The reversal of 120111121121121 is 121121121111021.

120111121121121 is a `hidden beast` number, since 1 + 201 + 111 + 211 + 21 + 121 = 666.

It is not a de Polignac number, because 120111121121121 - 2³ = 120111121121113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 120111121121094 and 120111121121103.

It is not an unprimeable number, because it can be changed into a prime (120111121121141) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 13597785 + ... + 20618486.

It is an arithmetic number, because the mean of its divisors is an integer number (3057394984560).

Almost surely, 2^{120111121121121} is an apocalyptic number.

It is an amenable number.

120111121121121 is a deficient number, since it is larger than the sum of its proper divisors (75562157890719).

120111121121121 is a wasteful number, since it uses less digits than its factorization.

120111121121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34216503 (or 34216497 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 18.

Adding to 120111121121121 its reverse (121121121111021), we get a palindrome (241232242232142).

The spelling of 120111121121121 in words is "one hundred twenty trillion, one hundred eleven billion, one hundred twenty-one million, one hundred twenty-one thousand, one hundred twenty-one".