111010101111111 has 16 divisors (see below), whose sum is σ = 152254741649408. Its totient is φ = 71892437047200.

The previous prime is 111010101111043. The next prime is 111010101111139. The reversal of 111010101111111 is 111111101010111.

It is not a de Polignac number, because 111010101111111 - 2¹⁹ = 111010100586823 is a prime.

It is a super-3 number, since 3×111010101111111³ (a number of 43 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111010101116111) 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, 792395095 + ... + 792535176.

It is an arithmetic number, because the mean of its divisors is an integer number (9515921353088).

Almost surely, 2^{111010101111111} is an apocalyptic number.

111010101111111 is a deficient number, since it is larger than the sum of its proper divisors (41244640538297).

111010101111111 is a wasteful number, since it uses less digits than its factorization.

111010101111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584930942.

The product of its (nonzero) digits is 1, while the sum is 12.

Adding to 111010101111111 its reverse (111111101010111), we get a palindrome (222121202121222).

It can be divided in two parts, 11101010111 and 1111, that multiplied together give a palindrome (12333222233321).

The spelling of 111010101111111 in words is "one hundred eleven trillion, ten billion, one hundred one million, one hundred eleven thousand, one hundred eleven".