111110212121011 has 8 divisors (see below), whose sum is σ = 111204778131104. Its totient is φ = 111015649526400.

The previous prime is 111110212120993. The next prime is 111110212121053. The reversal of 111110212121011 is 110121212011111.

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

It is a cyclic number.

It is not a de Polignac number, because 111110212121011 - 2²¹ = 111110210023859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111110212124011) 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, 66494410 + ... + 68144896.

It is an arithmetic number, because the mean of its divisors is an integer number (13900597266388).

Almost surely, 2^{111110212121011} is an apocalyptic number.

111110212121011 is a deficient number, since it is larger than the sum of its proper divisors (94566010093).

111110212121011 is a wasteful number, since it uses less digits than its factorization.

111110212121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1707741.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 111110212121011 its reverse (110121212011111), we get a palindrome (221231424132122).

The spelling of 111110212121011 in words is "one hundred eleven trillion, one hundred ten billion, two hundred twelve million, one hundred twenty-one thousand, eleven".