102021133 has 2 divisors, whose sum is σ = 102021134. Its totient is φ = 102021132.

The previous prime is 102021113. The next prime is 102021149. The reversal of 102021133 is 331120201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 101969604 + 51529 = 10098^2 + 227^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010566 + 51010567.

It is an arithmetic number, because the mean of its divisors is an integer number (51010567).

Almost surely, 2^102021133 is an apocalyptic number.

It is an amenable number.

102021133 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021133 is an equidigital number, since it uses as much as digits as its factorization.

102021133 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 102021133 is about 10100.5511235774. The cubic root of 102021133 is about 467.2651386867.

Adding to 102021133 its reverse (331120201), we get a palindrome (433141334).

The spelling of 102021133 in words is "one hundred two million, twenty-one thousand, one hundred thirty-three".