1121111102121 has 16 divisors (see below), whose sum is σ = 1509805165440. Its totient is φ = 739916812800.

The previous prime is 1121111102099. The next prime is 1121111102171. The reversal of 1121111102121 is 1212011111211.

It is not a de Polignac number, because 1121111102121 - 2¹³ = 1121111093929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1121111102121.

It is not an unprimeable number, because it can be changed into a prime (1121111102171) 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, 406771 + ... + 1551671.

It is an arithmetic number, because the mean of its divisors is an integer number (94362822840).

Almost surely, 2^{1121111102121} is an apocalyptic number.

It is an amenable number.

1121111102121 is a deficient number, since it is larger than the sum of its proper divisors (388694063319).

1121111102121 is a wasteful number, since it uses less digits than its factorization.

1121111102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148176.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 1121111102121 its reverse (1212011111211), we get a palindrome (2333122213332).

The spelling of 1121111102121 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred two thousand, one hundred twenty-one".