100221201221237 has 2 divisors, whose sum is σ = 100221201221238. Its totient is φ = 100221201221236.

The previous prime is 100221201221201. The next prime is 100221201221269. The reversal of 100221201221237 is 732122102122001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100142270566321 + 78930654916 = 10007111^2 + 280946^2 .

It is an emirp because it is prime and its reverse (732122102122001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 100221201221237 - 2¹² = 100221201217141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221201224237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110600610618 + 50110600610619.

It is an arithmetic number, because the mean of its divisors is an integer number (50110600610619).

Almost surely, 2^{100221201221237} is an apocalyptic number.

It is an amenable number.

100221201221237 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221201221237 is an equidigital number, since it uses as much as digits as its factorization.

100221201221237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 100221201221237 its reverse (732122102122001), we get a palindrome (832343303343238).

The spelling of 100221201221237 in words is "one hundred trillion, two hundred twenty-one billion, two hundred one million, two hundred twenty-one thousand, two hundred thirty-seven".