201221210102183 has 2 divisors, whose sum is σ = 201221210102184. Its totient is φ = 201221210102182.

The previous prime is 201221210102179. The next prime is 201221210102203. The reversal of 201221210102183 is 381201012122102.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 201221210102183 - 2² = 201221210102179 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201221210102173) by changing a digit.

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 as a sum of consecutive naturals, namely, 100610605051091 + 100610605051092.

It is an arithmetic number, because the mean of its divisors is an integer number (100610605051092).

Almost surely, 2^{201221210102183} is an apocalyptic number.

201221210102183 is a deficient number, since it is larger than the sum of its proper divisors (1).

201221210102183 is an equidigital number, since it uses as much as digits as its factorization.

201221210102183 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 768, while the sum is 26.

Adding to 201221210102183 its reverse (381201012122102), we get a palindrome (582422222224285).

The spelling of 201221210102183 in words is "two hundred one trillion, two hundred twenty-one billion, two hundred ten million, one hundred two thousand, one hundred eighty-three".