213311121113 has 2 divisors, whose sum is σ = 213311121114. Its totient is φ = 213311121112.

The previous prime is 213311121097. The next prime is 213311121137. The reversal of 213311121113 is 311121113312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 213303575104 + 7546009 = 461848^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 213311121113 - 2⁴ = 213311121097 is a prime.

It is not a weakly prime, because it can be changed into another prime (213311121173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106655560556 + 106655560557.

It is an arithmetic number, because the mean of its divisors is an integer number (106655560557).

Almost surely, 2^213311121113 is an apocalyptic number.

It is an amenable number.

213311121113 is a deficient number, since it is larger than the sum of its proper divisors (1).

213311121113 is an equidigital number, since it uses as much as digits as its factorization.

213311121113 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108, while the sum is 20.

Adding to 213311121113 its reverse (311121113312), we get a palindrome (524432234425).

The spelling of 213311121113 in words is "two hundred thirteen billion, three hundred eleven million, one hundred twenty-one thousand, one hundred thirteen".