221411751604499 has 2 divisors, whose sum is σ = 221411751604500. Its totient is φ = 221411751604498.

The previous prime is 221411751604451. The next prime is 221411751604579. The reversal of 221411751604499 is 994406157114122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221411751604499 - 2⁸ = 221411751604243 is a prime.

It is not a weakly prime, because it can be changed into another prime (221411751604399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110705875802249 + 110705875802250.

It is an arithmetic number, because the mean of its divisors is an integer number (110705875802250).

Almost surely, 2^{221411751604499} is an apocalyptic number.

221411751604499 is a deficient number, since it is larger than the sum of its proper divisors (1).

221411751604499 is an equidigital number, since it uses as much as digits as its factorization.

221411751604499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 221411751604499 in words is "two hundred twenty-one trillion, four hundred eleven billion, seven hundred fifty-one million, six hundred four thousand, four hundred ninety-nine".