221407345742399 has 2 divisors, whose sum is σ = 221407345742400. Its totient is φ = 221407345742398.

The previous prime is 221407345742377. The next prime is 221407345742459. The reversal of 221407345742399 is 993247543704122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221407345742399 - 2¹⁶ = 221407345676863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (221407345742309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110703672871199 + 110703672871200.

It is an arithmetic number, because the mean of its divisors is an integer number (110703672871200).

Almost surely, 2^{221407345742399} is an apocalyptic number.

221407345742399 is a deficient number, since it is larger than the sum of its proper divisors (1).

221407345742399 is an equidigital number, since it uses as much as digits as its factorization.

221407345742399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 91445760, while the sum is 62.

The spelling of 221407345742399 in words is "two hundred twenty-one trillion, four hundred seven billion, three hundred forty-five million, seven hundred forty-two thousand, three hundred ninety-nine".