111212330312101 has 4 divisors (see below), whose sum is σ = 111220729413804. Its totient is φ = 111203931210400.

The previous prime is 111212330312077. The next prime is 111212330312141. The reversal of 111212330312101 is 101213033212111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 97030892381476 + 14181437930625 = 9850426^2 + 3765825^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212330312101 - 2²⁵ = 111212296757669 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 (111212330312141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4199530990 + ... + 4199557471.

It is an arithmetic number, because the mean of its divisors is an integer number (27805182353451).

Almost surely, 2^{111212330312101} is an apocalyptic number.

It is an amenable number.

111212330312101 is a deficient number, since it is larger than the sum of its proper divisors (8399101703).

111212330312101 is an equidigital number, since it uses as much as digits as its factorization.

111212330312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8399101702.

The product of its (nonzero) digits is 216, while the sum is 22.

Adding to 111212330312101 its reverse (101213033212111), we get a palindrome (212425363524212).

The spelling of 111212330312101 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred thirty million, three hundred twelve thousand, one hundred one".