221011131343 has 2 divisors, whose sum is σ = 221011131344. Its totient is φ = 221011131342.

The previous prime is 221011131331. The next prime is 221011131347. The reversal of 221011131343 is 343131110122.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221011131343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221011131347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110505565671 + 110505565672.

It is an arithmetic number, because the mean of its divisors is an integer number (110505565672).

Almost surely, 2^221011131343 is an apocalyptic number.

221011131343 is a deficient number, since it is larger than the sum of its proper divisors (1).

221011131343 is an equidigital number, since it uses as much as digits as its factorization.

221011131343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 221011131343 its reverse (343131110122), we get a palindrome (564142241465).

The spelling of 221011131343 in words is "two hundred twenty-one billion, eleven million, one hundred thirty-one thousand, three hundred forty-three".