1101111010111 has 4 divisors (see below), whose sum is σ = 1258412582992. Its totient is φ = 943809437232.

The previous prime is 1101111010067. The next prime is 1101111010117. The reversal of 1101111010111 is 1110101111011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1101111010111 - 2¹⁹ = 1101110485823 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101111010117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78650786430 + ... + 78650786443.

It is an arithmetic number, because the mean of its divisors is an integer number (314603145748).

Almost surely, 2^{1101111010111} is an apocalyptic number.

1101111010111 is a deficient number, since it is larger than the sum of its proper divisors (157301572881).

1101111010111 is an equidigital number, since it uses as much as digits as its factorization.

1101111010111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157301572880.

The product of its (nonzero) digits is 1, while the sum is 10.

Adding to 1101111010111 its reverse (1110101111011), we get a palindrome (2211212121122).

The spelling of 1101111010111 in words is "one trillion, one hundred one billion, one hundred eleven million, ten thousand, one hundred eleven".