102202011281 has 2 divisors, whose sum is σ = 102202011282. Its totient is φ = 102202011280.

The previous prime is 102202011229. The next prime is 102202011299. The reversal of 102202011281 is 182110202201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101289427600 + 912583681 = 318260^2 + 30209^2 .

It is an emirp because it is prime and its reverse (182110202201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102202011281 - 2⁶ = 102202011217 is a prime.

It is a super-2 number, since 2×102202011281² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102202041281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51101005640 + 51101005641.

It is an arithmetic number, because the mean of its divisors is an integer number (51101005641).

Almost surely, 2^102202011281 is an apocalyptic number.

It is an amenable number.

102202011281 is a deficient number, since it is larger than the sum of its proper divisors (1).

102202011281 is an equidigital number, since it uses as much as digits as its factorization.

102202011281 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 20.

Adding to 102202011281 its reverse (182110202201), we get a palindrome (284312213482).

It can be divided in two parts, 1022020 and 11281, that added together give a palindrome (1033301).

The spelling of 102202011281 in words is "one hundred two billion, two hundred two million, eleven thousand, two hundred eighty-one".