111212212210313 has 4 divisors (see below), whose sum is σ = 111338446277268. Its totient is φ = 111085978143360.

The previous prime is 111212212210157. The next prime is 111212212210361. The reversal of 111212212210313 is 313012212212111.

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 7678900992889 + 103533311217424 = 2771083^2 + 10175132^2 .

It is a cyclic number.

It is not a de Polignac number, because 111212212210313 - 2¹⁸ = 111212211948169 is a prime.

It is a super-2 number, since 2×111212212210313² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111212212210613) 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, 63117032156 + ... + 63117033917.

It is an arithmetic number, because the mean of its divisors is an integer number (27834611569317).

Almost surely, 2^{111212212210313} is an apocalyptic number.

It is an amenable number.

111212212210313 is a deficient number, since it is larger than the sum of its proper divisors (126234066955).

111212212210313 is an equidigital number, since it uses as much as digits as its factorization.

111212212210313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126234066954.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 111212212210313 its reverse (313012212212111), we get a palindrome (424224424422424).

The spelling of 111212212210313 in words is "one hundred eleven trillion, two hundred twelve billion, two hundred twelve million, two hundred ten thousand, three hundred thirteen".