102110220222121 has 2 divisors, whose sum is σ = 102110220222122. Its totient is φ = 102110220222120.

The previous prime is 102110220222071. The next prime is 102110220222139. The reversal of 102110220222121 is 121222022011201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95620137888025 + 6490082334096 = 9778555^2 + 2547564^2 .

It is an emirp because it is prime and its reverse (121222022011201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102110220222121 - 2¹⁷ = 102110220091049 is a prime.

It is not a weakly prime, because it can be changed into another prime (102110220222161) 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, 51055110111060 + 51055110111061.

It is an arithmetic number, because the mean of its divisors is an integer number (51055110111061).

Almost surely, 2^{102110220222121} is an apocalyptic number.

It is an amenable number.

102110220222121 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110220222121 is an equidigital number, since it uses as much as digits as its factorization.

102110220222121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 102110220222121 its reverse (121222022011201), we get a palindrome (223332242233322).

The spelling of 102110220222121 in words is "one hundred two trillion, one hundred ten billion, two hundred twenty million, two hundred twenty-two thousand, one hundred twenty-one".