201221100220967 has 2 divisors, whose sum is σ = 201221100220968. Its totient is φ = 201221100220966.

The previous prime is 201221100220867. The next prime is 201221100221123. The reversal of 201221100220967 is 769022001122102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201221100220967 - 2¹⁴ = 201221100204583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201221100220267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610550110483 + 100610550110484.

It is an arithmetic number, because the mean of its divisors is an integer number (100610550110484).

Almost surely, 2^{201221100220967} is an apocalyptic number.

201221100220967 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221100220967 is an equidigital number, since it uses as much as digits as its factorization.

201221100220967 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The spelling of 201221100220967 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred million, two hundred twenty thousand, nine hundred sixty-seven".