111211303213 has 2 divisors, whose sum is σ = 111211303214. Its totient is φ = 111211303212.

The previous prime is 111211303201. The next prime is 111211303241. The reversal of 111211303213 is 312303112111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109057136644 + 2154166569 = 330238^2 + 46413^2 .

It is a cyclic number.

It is not a de Polignac number, because 111211303213 - 2¹³ = 111211295021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111211303013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55605651606 + 55605651607.

It is an arithmetic number, because the mean of its divisors is an integer number (55605651607).

Almost surely, 2^111211303213 is an apocalyptic number.

It is an amenable number.

111211303213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111211303213 is an equidigital number, since it uses as much as digits as its factorization.

111211303213 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 111211303213 its reverse (312303112111), we get a palindrome (423514415324).

The spelling of 111211303213 in words is "one hundred eleven billion, two hundred eleven million, three hundred three thousand, two hundred thirteen".