1111121020111 has 8 divisors (see below), whose sum is σ = 1113623871984. Its totient is φ = 1108618697280.

The previous prime is 1111121020109. The next prime is 1111121020159. The reversal of 1111121020111 is 1110201211111.

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

It is not a de Polignac number, because 1111121020111 - 2¹ = 1111121020109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111121020091 and 1111121020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111121020181) 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, 4234891 + ... + 4489603.

It is an arithmetic number, because the mean of its divisors is an integer number (139202983998).

Almost surely, 2^{1111121020111} is an apocalyptic number.

1111121020111 is a deficient number, since it is larger than the sum of its proper divisors (2502851873).

1111121020111 is an equidigital number, since it uses as much as digits as its factorization.

1111121020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264521.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1111121020111 its reverse (1110201211111), we get a palindrome (2221322231222).

The spelling of 1111121020111 in words is "one trillion, one hundred eleven billion, one hundred twenty-one million, twenty thousand, one hundred eleven".