111202211213 has 2 divisors, whose sum is σ = 111202211214. Its totient is φ = 111202211212.

The previous prime is 111202211161. The next prime is 111202211243. The reversal of 111202211213 is 312112202111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 91265618404 + 19936592809 = 302102^2 + 141197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111202211213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111202211191 and 111202211200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111202211243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55601105606 + 55601105607.

It is an arithmetic number, because the mean of its divisors is an integer number (55601105607).

Almost surely, 2^111202211213 is an apocalyptic number.

It is an amenable number.

111202211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

111202211213 is an equidigital number, since it uses as much as digits as its factorization.

111202211213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 111202211213 its reverse (312112202111), we get a palindrome (423314413324).

The spelling of 111202211213 in words is "one hundred eleven billion, two hundred two million, two hundred eleven thousand, two hundred thirteen".