121120111102121 has 8 divisors (see below), whose sum is σ = 123173963021760. Its totient is φ = 119066291471952.

The previous prime is 121120111102091. The next prime is 121120111102181. The reversal of 121120111102121 is 121201111021121.

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

It is a cyclic number.

It is not a de Polignac number, because 121120111102121 - 2¹⁸ = 121120110839977 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121120111102121.

It is not an unprimeable number, because it can be changed into a prime (121120111102181) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 446045 + ... + 15570458.

It is an arithmetic number, because the mean of its divisors is an integer number (15396745377720).

Almost surely, 2^{121120111102121} is an apocalyptic number.

It is an amenable number.

121120111102121 is a deficient number, since it is larger than the sum of its proper divisors (2053851919639).

121120111102121 is a wasteful number, since it uses less digits than its factorization.

121120111102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16144735.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121120111102121 its reverse (121201111021121), we get a palindrome (242321222123242).

The spelling of 121120111102121 in words is "one hundred twenty-one trillion, one hundred twenty billion, one hundred eleven million, one hundred two thousand, one hundred twenty-one".