102110102010221 has 2 divisors, whose sum is σ = 102110102010222. Its totient is φ = 102110102010220.

The previous prime is 102110102010197. The next prime is 102110102010233. The reversal of 102110102010221 is 122010201011201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101222010637225 + 888091372996 = 10060915^2 + 942386^2 .

It is an emirp because it is prime and its reverse (122010201011201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102110102010221 - 2¹⁰ = 102110102009197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102110102010196 and 102110102010205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102110102015221) 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, 51055051005110 + 51055051005111.

It is an arithmetic number, because the mean of its divisors is an integer number (51055051005111).

Almost surely, 2^{102110102010221} is an apocalyptic number.

It is an amenable number.

102110102010221 is a deficient number, since it is larger than the sum of its proper divisors (1).

102110102010221 is an equidigital number, since it uses as much as digits as its factorization.

102110102010221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102110102010221 its reverse (122010201011201), we get a palindrome (224120303021422).

The spelling of 102110102010221 in words is "one hundred two trillion, one hundred ten billion, one hundred two million, ten thousand, two hundred twenty-one".