1121121200121 has 16 divisors (see below), whose sum is σ = 1610033927040. Its totient is φ = 689826936960.

The previous prime is 1121121200117. The next prime is 1121121200131. The reversal of 1121121200121 is 1210021211211.

It is a happy number.

It is not a de Polignac number, because 1121121200121 - 2² = 1121121200117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121121200121.

It is not an unprimeable number, because it can be changed into a prime (1121121200131) 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 15 ways as a sum of consecutive naturals, for example, 1663125 + ... + 2237906.

It is an arithmetic number, because the mean of its divisors is an integer number (100627120440).

Almost surely, 2^{1121121200121} is an apocalyptic number.

It is an amenable number.

1121121200121 is a deficient number, since it is larger than the sum of its proper divisors (488912726919).

1121121200121 is a wasteful number, since it uses less digits than its factorization.

1121121200121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3908416.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121121200121 its reverse (1210021211211), we get a palindrome (2331142411332).

The spelling of 1121121200121 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred thousand, one hundred twenty-one".