121120012121 has 8 divisors (see below), whose sum is σ = 121839159744. Its totient is φ = 120401083600.

The previous prime is 121120012093. The next prime is 121120012159. The reversal of 121120012121 is 121210021121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121120012121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121120012096 and 121120012105.

It is not an unprimeable number, because it can be changed into a prime (121120012021) 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 7 ways as a sum of consecutive naturals, for example, 1129796 + ... + 1232346.

It is an arithmetic number, because the mean of its divisors is an integer number (15229894968).

Almost surely, 2^121120012121 is an apocalyptic number.

It is an amenable number.

121120012121 is a deficient number, since it is larger than the sum of its proper divisors (719147623).

121120012121 is a wasteful number, since it uses less digits than its factorization.

121120012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109551.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121120012121 its reverse (121210021121), we get a palindrome (242330033242).

The spelling of 121120012121 in words is "one hundred twenty-one billion, one hundred twenty million, twelve thousand, one hundred twenty-one".