1101111100111 has 16 divisors (see below), whose sum is σ = 1327170417408. Its totient is φ = 901165091200.

The previous prime is 1101111100073. The next prime is 1101111100171. The reversal of 1101111100111 is 1110011111011.

It is a happy number.

It is not a de Polignac number, because 1101111100111 - 2¹⁷ = 1101110969039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1101111100171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128002105 + ... + 128010706.

It is an arithmetic number, because the mean of its divisors is an integer number (82948151088).

Almost surely, 2^{1101111100111} is an apocalyptic number.

1101111100111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1101111100111 is a deficient number, since it is larger than the sum of its proper divisors (226059317297).

1101111100111 is a wasteful number, since it uses less digits than its factorization.

1101111100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256012862.

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

Adding to 1101111100111 its reverse (1110011111011), we get a palindrome (2211122211122).

It can be divided in two parts, 11011 and 11100111, that multiplied together give a palindrome (122223322221).

The spelling of 1101111100111 in words is "one trillion, one hundred one billion, one hundred eleven million, one hundred thousand, one hundred eleven".