1111121101111 has 6 divisors (see below), whose sum is σ = 1292528627880. Its totient is φ = 952389515196.

The previous prime is 1111121101091. The next prime is 1111121101133. The reversal of 1111121101111 is 1111011211111.

It is not a de Polignac number, because 1111121101111 - 2¹¹ = 1111121099063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1111121101091 and 1111121101100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111121101711) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11337970371 + ... + 11337970468.

It is an arithmetic number, because the mean of its divisors is an integer number (215421437980).

Almost surely, 2^{1111121101111} is an apocalyptic number.

1111121101111 is a deficient number, since it is larger than the sum of its proper divisors (181407526769).

1111121101111 is an equidigital number, since it uses as much as digits as its factorization.

1111121101111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22675940853 (or 22675940846 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 1111121101111 its reverse (1111011211111), we get a palindrome (2222132312222).

The spelling of 1111121101111 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, one hundred one thousand, one hundred eleven".