1121121111121 has 16 divisors (see below), whose sum is σ = 1235777083200. Its totient is φ = 1008598024000.

The previous prime is 1121121111107. The next prime is 1121121111133. The reversal of 1121121111121 is 1211111211211.

It is a cyclic number.

It is not a de Polignac number, because 1121121111121 - 2³³ = 1112531176529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1121121111095 and 1121121111104.

It is not an unprimeable number, because it can be changed into a prime (1121121111181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1943715 + ... + 2453623.

It is an arithmetic number, because the mean of its divisors is an integer number (77236067700).

Almost surely, 2^{1121121111121} is an apocalyptic number.

1121121111121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1121121111121 is a deficient number, since it is larger than the sum of its proper divisors (114655972079).

1121121111121 is a wasteful number, since it uses less digits than its factorization.

1121121111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512000.

The product of its digits is 8, while the sum is 16.

Adding to 1121121111121 its reverse (1211111211211), we get a palindrome (2332232322332).

The spelling of 1121121111121 in words is "one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, one hundred twenty-one".