213111303123241 has 2 divisors, whose sum is σ = 213111303123242. Its totient is φ = 213111303123240.

The previous prime is 213111303123211. The next prime is 213111303123253. The reversal of 213111303123241 is 142321303111312.

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., 176199845892841 + 36911457230400 = 13274029^2 + 6075480^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-213111303123241 is a prime.

It is not a weakly prime, because it can be changed into another prime (213111303123211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555651561620 + 106555651561621.

It is an arithmetic number, because the mean of its divisors is an integer number (106555651561621).

Almost surely, 2^{213111303123241} is an apocalyptic number.

It is an amenable number.

213111303123241 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111303123241 is an equidigital number, since it uses as much as digits as its factorization.

213111303123241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 28.

Adding to 213111303123241 its reverse (142321303111312), we get a palindrome (355432606234553).

The spelling of 213111303123241 in words is "two hundred thirteen trillion, one hundred eleven billion, three hundred three million, one hundred twenty-three thousand, two hundred forty-one".