221403411011 has 2 divisors, whose sum is σ = 221403411012. Its totient is φ = 221403411010.

The previous prime is 221403410989. The next prime is 221403411023. The reversal of 221403411011 is 110114304122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221403411011 - 2⁶ = 221403410947 is a prime.

It is not a weakly prime, because it can be changed into another prime (221403411511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110701705505 + 110701705506.

It is an arithmetic number, because the mean of its divisors is an integer number (110701705506).

Almost surely, 2^221403411011 is an apocalyptic number.

221403411011 is a deficient number, since it is larger than the sum of its proper divisors (1).

221403411011 is an equidigital number, since it uses as much as digits as its factorization.

221403411011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 221403411011 its reverse (110114304122), we get a palindrome (331517715133).

The spelling of 221403411011 in words is "two hundred twenty-one billion, four hundred three million, four hundred eleven thousand, eleven".