100221021253 has 2 divisors, whose sum is σ = 100221021254. Its totient is φ = 100221021252.

The previous prime is 100221021217. The next prime is 100221021269. The reversal of 100221021253 is 352120122001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93221523684 + 6999497569 = 305322^2 + 83663^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100221021253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 100221021253.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221021283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110510626 + 50110510627.

It is an arithmetic number, because the mean of its divisors is an integer number (50110510627).

Almost surely, 2^100221021253 is an apocalyptic number.

It is an amenable number.

100221021253 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221021253 is an equidigital number, since it uses as much as digits as its factorization.

100221021253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 100221021253 its reverse (352120122001), we get a palindrome (452341143254).

The spelling of 100221021253 in words is "one hundred billion, two hundred twenty-one million, twenty-one thousand, two hundred fifty-three".