111011212111213 has 16 divisors (see below), whose sum is σ = 112010348753856. Its totient is φ = 110017763856000.

The previous prime is 111011212111139. The next prime is 111011212111229. The reversal of 111011212111213 is 312111212110111.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 111011212111213 - 2⁴¹ = 108812188855661 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 (111011212111243) 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, 42491170 + ... + 45028012.

It is an arithmetic number, because the mean of its divisors is an integer number (7000646797116).

Almost surely, 2^{111011212111213} is an apocalyptic number.

It is an amenable number.

111011212111213 is a deficient number, since it is larger than the sum of its proper divisors (999136642643).

111011212111213 is a wasteful number, since it uses less digits than its factorization.

111011212111213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537964.

The product of its (nonzero) digits is 24, while the sum is 19.

Adding to 111011212111213 its reverse (312111212110111), we get a palindrome (423122424221324).

The spelling of 111011212111213 in words is "one hundred eleven trillion, eleven billion, two hundred twelve million, one hundred eleven thousand, two hundred thirteen".