111212100013 has 8 divisors (see below), whose sum is σ = 127101560832. Its totient is φ = 95323143696.

The previous prime is 111212100011. The next prime is 111212100049. The reversal of 111212100013 is 310001212111.

It is a happy number.

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 111212100013 - 2¹ = 111212100011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111212099966 and 111212100002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111212100011) 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, 786831 + ... + 917347.

It is an arithmetic number, because the mean of its divisors is an integer number (15887695104).

Almost surely, 2^111212100013 is an apocalyptic number.

It is an amenable number.

111212100013 is a deficient number, since it is larger than the sum of its proper divisors (15889460819).

111212100013 is a wasteful number, since it uses less digits than its factorization.

111212100013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 252251.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 111212100013 its reverse (310001212111), we get a palindrome (421213312124).

The spelling of 111212100013 in words is "one hundred eleven billion, two hundred twelve million, one hundred thousand, thirteen".