221024320450993 has 2 divisors, whose sum is σ = 221024320450994. Its totient is φ = 221024320450992.

The previous prime is 221024320450987. The next prime is 221024320451021. The reversal of 221024320450993 is 399054023420122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177712548206769 + 43311772244224 = 13330887^2 + 6581168^2 .

It is a cyclic number.

It is not a de Polignac number, because 221024320450993 - 2⁵ = 221024320450961 is a prime.

It is not a weakly prime, because it can be changed into another prime (221024320450943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110512160225496 + 110512160225497.

It is an arithmetic number, because the mean of its divisors is an integer number (110512160225497).

Almost surely, 2^{221024320450993} is an apocalyptic number.

It is an amenable number.

221024320450993 is a deficient number, since it is larger than the sum of its proper divisors (1).

221024320450993 is an equidigital number, since it uses as much as digits as its factorization.

221024320450993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 221024320450993 in words is "two hundred twenty-one trillion, twenty-four billion, three hundred twenty million, four hundred fifty thousand, nine hundred ninety-three".