1121121211121 has 8 divisors (see below), whose sum is σ = 1127825705664. Its totient is φ = 1114434478000.

The previous prime is 1121121211117. The next prime is 1121121211181. The reversal of 1121121211121 is 1211121211211.

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

It is not a de Polignac number, because 1121121211121 - 2² = 1121121211117 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 1121121211121.

It is not an unprimeable number, because it can be changed into a prime (1121121211181) 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, 4313726 + ... + 4566231.

It is an arithmetic number, because the mean of its divisors is an integer number (140978213208).

Almost surely, 2^{1121121211121} is an apocalyptic number.

It is an amenable number.

1121121211121 is a deficient number, since it is larger than the sum of its proper divisors (6704494543).

1121121211121 is an equidigital number, since it uses as much as digits as its factorization.

1121121211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8880711.

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

Adding to 1121121211121 its reverse (1211121211211), we get a palindrome (2332242422332).

The spelling of 1121121211121 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred eleven thousand, one hundred twenty-one".