1121002120121 has 8 divisors (see below), whose sum is σ = 1235308240320. Its totient is φ = 1010706741072.

The previous prime is 1121002120097. The next prime is 1121002120123. The reversal of 1121002120121 is 1210212001211.

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 1121002120121 - 2²⁶ = 1120935011257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121002120096 and 1121002120105.

It is not an unprimeable number, because it can be changed into a prime (1121002120123) 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, 1002684701 + ... + 1002685818.

It is an arithmetic number, because the mean of its divisors is an integer number (154413530040).

Almost surely, 2^{1121002120121} is an apocalyptic number.

It is an amenable number.

1121002120121 is a deficient number, since it is larger than the sum of its proper divisors (114306120199).

1121002120121 is a wasteful number, since it uses less digits than its factorization.

1121002120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2005370575.

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

Adding to 1121002120121 its reverse (1210212001211), we get a palindrome (2331214121332).

The spelling of 1121002120121 in words is "one trillion, one hundred twenty-one billion, two million, one hundred twenty thousand, one hundred twenty-one".