221343446011 has 2 divisors, whose sum is σ = 221343446012. Its totient is φ = 221343446010.

The previous prime is 221343446003. The next prime is 221343446021. The reversal of 221343446011 is 110644343122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221343446011 - 2³ = 221343446003 is a prime.

It is not a weakly prime, because it can be changed into another prime (221343446021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110671723005 + 110671723006.

It is an arithmetic number, because the mean of its divisors is an integer number (110671723006).

Almost surely, 2^221343446011 is an apocalyptic number.

221343446011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221343446011 is an equidigital number, since it uses as much as digits as its factorization.

221343446011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 221343446011 its reverse (110644343122), we get a palindrome (331987789133).

The spelling of 221343446011 in words is "two hundred twenty-one billion, three hundred forty-three million, four hundred forty-six thousand, eleven".