102221121097 has 2 divisors, whose sum is σ = 102221121098. Its totient is φ = 102221121096.

The previous prime is 102221121061. The next prime is 102221121103. The reversal of 102221121097 is 790121122201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101261422656 + 959698441 = 318216^2 + 30979^2 .

It is a cyclic number.

It is not a de Polignac number, because 102221121097 - 2³¹ = 100073637449 is a prime.

It is not a weakly prime, because it can be changed into another prime (102221121697) 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, 51110560548 + 51110560549.

It is an arithmetic number, because the mean of its divisors is an integer number (51110560549).

Almost surely, 2^102221121097 is an apocalyptic number.

It is an amenable number.

102221121097 is a deficient number, since it is larger than the sum of its proper divisors (1).

102221121097 is an equidigital number, since it uses as much as digits as its factorization.

102221121097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 28.

Adding to 102221121097 its reverse (790121122201), we get a palindrome (892342243298).

The spelling of 102221121097 in words is "one hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand, ninety-seven".