212440311353 has 2 divisors, whose sum is σ = 212440311354. Its totient is φ = 212440311352.

The previous prime is 212440311311. The next prime is 212440311373. The reversal of 212440311353 is 353113044212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 211460183104 + 980128249 = 459848^2 + 31307^2 .

It is a cyclic number.

It is not a de Polignac number, because 212440311353 - 2²⁸ = 212171875897 is a prime.

It is not a weakly prime, because it can be changed into another prime (212440311373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106220155676 + 106220155677.

It is an arithmetic number, because the mean of its divisors is an integer number (106220155677).

Almost surely, 2^212440311353 is an apocalyptic number.

It is an amenable number.

212440311353 is a deficient number, since it is larger than the sum of its proper divisors (1).

212440311353 is an equidigital number, since it uses as much as digits as its factorization.

212440311353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 212440311353 its reverse (353113044212), we get a palindrome (565553355565).

The spelling of 212440311353 in words is "two hundred twelve billion, four hundred forty million, three hundred eleven thousand, three hundred fifty-three".