213255040441 has 2 divisors, whose sum is σ = 213255040442. Its totient is φ = 213255040440.

The previous prime is 213255040433. The next prime is 213255040451. The reversal of 213255040441 is 144040552312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157367716416 + 55887324025 = 396696^2 + 236405^2 .

It is a cyclic number.

It is not a de Polignac number, because 213255040441 - 2³ = 213255040433 is a prime.

It is not a weakly prime, because it can be changed into another prime (213255040451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106627520220 + 106627520221.

It is an arithmetic number, because the mean of its divisors is an integer number (106627520221).

Almost surely, 2^213255040441 is an apocalyptic number.

It is an amenable number.

213255040441 is a deficient number, since it is larger than the sum of its proper divisors (1).

213255040441 is an equidigital number, since it uses as much as digits as its factorization.

213255040441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19200, while the sum is 31.

Adding to 213255040441 its reverse (144040552312), we get a palindrome (357295592753).

The spelling of 213255040441 in words is "two hundred thirteen billion, two hundred fifty-five million, forty thousand, four hundred forty-one".