111213130321 has 2 divisors, whose sum is σ = 111213130322. Its totient is φ = 111213130320.

The previous prime is 111213130319. The next prime is 111213130333. The reversal of 111213130321 is 123031312111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64021650625 + 47191479696 = 253025^2 + 217236^2 .

It is an emirp because it is prime and its reverse (123031312111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 111213130321 - 2¹ = 111213130319 is a prime.

Together with 111213130319, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (111213130351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55606565160 + 55606565161.

It is an arithmetic number, because the mean of its divisors is an integer number (55606565161).

Almost surely, 2^111213130321 is an apocalyptic number.

It is an amenable number.

111213130321 is a deficient number, since it is larger than the sum of its proper divisors (1).

111213130321 is an equidigital number, since it uses as much as digits as its factorization.

111213130321 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 111213130321 its reverse (123031312111), we get a palindrome (234244442432).

The spelling of 111213130321 in words is "one hundred eleven billion, two hundred thirteen million, one hundred thirty thousand, three hundred twenty-one".