221772354443363 has 2 divisors, whose sum is σ = 221772354443364. Its totient is φ = 221772354443362.

The previous prime is 221772354443347. The next prime is 221772354443383. The reversal of 221772354443363 is 363344453277122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 221772354443363 - 2⁴ = 221772354443347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 221772354443299 and 221772354443308.

It is not a weakly prime, because it can be changed into another prime (221772354443383) 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, 110886177221681 + 110886177221682.

It is an arithmetic number, because the mean of its divisors is an integer number (110886177221682).

Almost surely, 2^{221772354443363} is an apocalyptic number.

221772354443363 is a deficient number, since it is larger than the sum of its proper divisors (1).

221772354443363 is an equidigital number, since it uses as much as digits as its factorization.

221772354443363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60963840, while the sum is 56.

The spelling of 221772354443363 in words is "two hundred twenty-one trillion, seven hundred seventy-two billion, three hundred fifty-four million, four hundred forty-three thousand, three hundred sixty-three".