111212302030213 has 4 divisors (see below), whose sum is σ = 111214576871020. Its totient is φ = 111210027189408.

The previous prime is 111212302030171. The next prime is 111212302030231. The reversal of 111212302030213 is 312030203212111.

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 87473988679009 + 23738313351204 = 9352753^2 + 4872198^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212302030213 - 2¹³ = 111212302022021 is a prime.

It is a super-2 number, since 2×111212302030213² (a number of 29 digits) contains 22 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 (111212302030273) 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, 1137347070 + ... + 1137444847.

It is an arithmetic number, because the mean of its divisors is an integer number (27803644217755).

Almost surely, 2^{111212302030213} is an apocalyptic number.

It is an amenable number.

111212302030213 is a deficient number, since it is larger than the sum of its proper divisors (2274840807).

111212302030213 is an equidigital number, since it uses as much as digits as its factorization.

111212302030213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274840806.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 111212302030213 its reverse (312030203212111), we get a palindrome (423242505242324).

The spelling of 111212302030213 in words is "one hundred eleven trillion, two hundred twelve billion, three hundred two million, thirty thousand, two hundred thirteen".