213111030049 has 2 divisors, whose sum is σ = 213111030050. Its totient is φ = 213111030048.

The previous prime is 213111030017. The next prime is 213111030071. The reversal of 213111030049 is 940030111312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154531541025 + 58579489024 = 393105^2 + 242032^2 .

It is a cyclic number.

It is not a de Polignac number, because 213111030049 - 2⁵ = 213111030017 is a prime.

It is a super-2 number, since 2×213111030049² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213111730049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106555515024 + 106555515025.

It is an arithmetic number, because the mean of its divisors is an integer number (106555515025).

Almost surely, 2^213111030049 is an apocalyptic number.

It is an amenable number.

213111030049 is a deficient number, since it is larger than the sum of its proper divisors (1).

213111030049 is an equidigital number, since it uses as much as digits as its factorization.

213111030049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The spelling of 213111030049 in words is "two hundred thirteen billion, one hundred eleven million, thirty thousand, forty-nine".