221001022199965 has 16 divisors (see below), whose sum is σ = 305299430883072. Its totient is φ = 150437400718464.

The previous prime is 221001022199939. The next prime is 221001022200043. The reversal of 221001022199965 is 569991220100122.

It is a cyclic number.

It is not a de Polignac number, because 221001022199965 - 2¹⁹ = 221001021675677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23044940169 + ... + 23044949758.

It is an arithmetic number, because the mean of its divisors is an integer number (19081214430192).

Almost surely, 2^{221001022199965} is an apocalyptic number.

It is an amenable number.

221001022199965 is a deficient number, since it is larger than the sum of its proper divisors (84298408683107).

221001022199965 is a wasteful number, since it uses less digits than its factorization.

221001022199965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46089890076.

The product of its (nonzero) digits is 349920, while the sum is 49.

The spelling of 221001022199965 in words is "two hundred twenty-one trillion, one billion, twenty-two million, one hundred ninety-nine thousand, nine hundred sixty-five".