1121111122011 has 16 divisors (see below), whose sum is σ = 1499467422720. Its totient is φ = 745082300160.

The previous prime is 1121111121979. The next prime is 1121111122031. The reversal of 1121111122011 is 1102211111211.

It is not a de Polignac number, because 1121111122011 - 2⁵ = 1121111121979 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121111122031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3699450 + ... + 3991008.

It is an arithmetic number, because the mean of its divisors is an integer number (93716713920).

Almost surely, 2^{1121111122011} is an apocalyptic number.

1121111122011 is a deficient number, since it is larger than the sum of its proper divisors (378356300709).

1121111122011 is a wasteful number, since it uses less digits than its factorization.

1121111122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295546.

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

Adding to 1121111122011 its reverse (1102211111211), we get a palindrome (2223322233222).

The spelling of 1121111122011 in words is "one trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twenty-two thousand, eleven".