221202019943 has 2 divisors, whose sum is σ = 221202019944. Its totient is φ = 221202019942.

The previous prime is 221202019939. The next prime is 221202020009. The reversal of 221202019943 is 349910202122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221202019943 - 2² = 221202019939 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221202010943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110601009971 + 110601009972.

It is an arithmetic number, because the mean of its divisors is an integer number (110601009972).

Almost surely, 2^221202019943 is an apocalyptic number.

221202019943 is a deficient number, since it is larger than the sum of its proper divisors (1).

221202019943 is an equidigital number, since it uses as much as digits as its factorization.

221202019943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The spelling of 221202019943 in words is "two hundred twenty-one billion, two hundred two million, nineteen thousand, nine hundred forty-three".