201221023001267 has 2 divisors, whose sum is σ = 201221023001268. Its totient is φ = 201221023001266.

The previous prime is 201221023001239. The next prime is 201221023001353. The reversal of 201221023001267 is 762100320122102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201221023001267 - 2¹⁶ = 201221022935731 is a prime.

It is not a weakly prime, because it can be changed into another prime (201221023031267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100610511500633 + 100610511500634.

It is an arithmetic number, because the mean of its divisors is an integer number (100610511500634).

Almost surely, 2^{201221023001267} is an apocalyptic number.

201221023001267 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221023001267 is an equidigital number, since it uses as much as digits as its factorization.

201221023001267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 201221023001267 its reverse (762100320122102), we get a palindrome (963321343123369).

The spelling of 201221023001267 in words is "two hundred one trillion, two hundred twenty-one billion, twenty-three million, one thousand, two hundred sixty-seven".