221243980688711 has 2 divisors, whose sum is σ = 221243980688712. Its totient is φ = 221243980688710.

The previous prime is 221243980688677. The next prime is 221243980688719. The reversal of 221243980688711 is 117886089342122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221243980688711 - 2¹⁰ = 221243980687687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221243980688719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110621990344355 + 110621990344356.

It is an arithmetic number, because the mean of its divisors is an integer number (110621990344356).

Almost surely, 2^{221243980688711} is an apocalyptic number.

221243980688711 is a deficient number, since it is larger than the sum of its proper divisors (1).

221243980688711 is an equidigital number, since it uses as much as digits as its factorization.

221243980688711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18579456, while the sum is 62.

The spelling of 221243980688711 in words is "two hundred twenty-one trillion, two hundred forty-three billion, nine hundred eighty million, six hundred eighty-eight thousand, seven hundred eleven".