12111101101011 has 32 divisors (see below), whose sum is σ = 18027625220352. Its totient is φ = 7168646136960.

The previous prime is 12111101100983. The next prime is 12111101101039. The reversal of 12111101101011 is 11010110111121.

It is an interprime number because it is at equal distance from previous prime (12111101100983) and next prime (12111101101039).

It is not a de Polignac number, because 12111101101011 - 2⁷ = 12111101100883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12111101101081) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13957581 + ... + 14799873.

It is an arithmetic number, because the mean of its divisors is an integer number (563363288136).

Almost surely, 2^{12111101101011} is an apocalyptic number.

12111101101011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12111101101011 is a deficient number, since it is larger than the sum of its proper divisors (5916524119341).

12111101101011 is a wasteful number, since it uses less digits than its factorization.

12111101101011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852483.

The product of its (nonzero) digits is 2, while the sum is 12.

Adding to 12111101101011 its reverse (11010110111121), we get a palindrome (23121211212132).

It can be divided in two parts, 1211110110 and 1011, that added together give a palindrome (1211111121).

The spelling of 12111101101011 in words is "twelve trillion, one hundred eleven billion, one hundred one million, one hundred one thousand, eleven".