102121011193 has 2 divisors, whose sum is σ = 102121011194. Its totient is φ = 102121011192.

The previous prime is 102121011169. The next prime is 102121011227. The reversal of 102121011193 is 391110121201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100617743209 + 1503267984 = 317203^2 + 38772^2 .

It is a cyclic number.

It is not a de Polignac number, because 102121011193 - 2²¹ = 102118914041 is a prime.

It is not a weakly prime, because it can be changed into another prime (102121012193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51060505596 + 51060505597.

It is an arithmetic number, because the mean of its divisors is an integer number (51060505597).

Almost surely, 2^102121011193 is an apocalyptic number.

It is an amenable number.

102121011193 is a deficient number, since it is larger than the sum of its proper divisors (1).

102121011193 is an equidigital number, since it uses as much as digits as its factorization.

102121011193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 22.

Adding to 102121011193 its reverse (391110121201), we get a palindrome (493231132394).

The spelling of 102121011193 in words is "one hundred two billion, one hundred twenty-one million, eleven thousand, one hundred ninety-three".