221100222043 has 2 divisors, whose sum is σ = 221100222044. Its totient is φ = 221100222042.

The previous prime is 221100222019. The next prime is 221100222073. The reversal of 221100222043 is 340222001122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221100222043 - 2⁵ = 221100222011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 221100222043.

It is not a weakly prime, because it can be changed into another prime (221100222073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110550111021 + 110550111022.

It is an arithmetic number, because the mean of its divisors is an integer number (110550111022).

Almost surely, 2^221100222043 is an apocalyptic number.

221100222043 is a deficient number, since it is larger than the sum of its proper divisors (1).

221100222043 is an equidigital number, since it uses as much as digits as its factorization.

221100222043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 221100222043 its reverse (340222001122), we get a palindrome (561322223165).

The spelling of 221100222043 in words is "two hundred twenty-one billion, one hundred million, two hundred twenty-two thousand, forty-three".