100221141997 has 2 divisors, whose sum is σ = 100221141998. Its totient is φ = 100221141996.

The previous prime is 100221141991. The next prime is 100221142067. The reversal of 100221141997 is 799141122001.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74846563561 + 25374578436 = 273581^2 + 159294^2 .

It is a cyclic number.

It is not a de Polignac number, because 100221141997 - 2³ = 100221141989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100221141991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50110570998 + 50110570999.

It is an arithmetic number, because the mean of its divisors is an integer number (50110570999).

Almost surely, 2^100221141997 is an apocalyptic number.

It is an amenable number.

100221141997 is a deficient number, since it is larger than the sum of its proper divisors (1).

100221141997 is an equidigital number, since it uses as much as digits as its factorization.

100221141997 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 37.

Adding to 100221141997 its reverse (799141122001), we get a palindrome (899362263998).

The spelling of 100221141997 in words is "one hundred billion, two hundred twenty-one million, one hundred forty-one thousand, nine hundred ninety-seven".