221315470980893 has 2 divisors, whose sum is σ = 221315470980894. Its totient is φ = 221315470980892.

The previous prime is 221315470980881. The next prime is 221315470980913. The reversal of 221315470980893 is 398089074513122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217695329268004 + 3620141712889 = 14754502^2 + 1902667^2 .

It is a cyclic number.

It is not a de Polignac number, because 221315470980893 - 2³⁰ = 221314397239069 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221315470910893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110657735490446 + 110657735490447.

It is an arithmetic number, because the mean of its divisors is an integer number (110657735490447).

Almost surely, 2^{221315470980893} is an apocalyptic number.

It is an amenable number.

221315470980893 is a deficient number, since it is larger than the sum of its proper divisors (1).

221315470980893 is an equidigital number, since it uses as much as digits as its factorization.

221315470980893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 221315470980893 in words is "two hundred twenty-one trillion, three hundred fifteen billion, four hundred seventy million, nine hundred eighty thousand, eight hundred ninety-three".