102021112601 has 2 divisors, whose sum is σ = 102021112602. Its totient is φ = 102021112600.

The previous prime is 102021112597. The next prime is 102021112643. The reversal of 102021112601 is 106211120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88640175625 + 13380936976 = 297725^2 + 115676^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021112601 - 2² = 102021112597 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 102021112601.

It is not a weakly prime, because it can be changed into another prime (102021112651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010556300 + 51010556301.

It is an arithmetic number, because the mean of its divisors is an integer number (51010556301).

Almost surely, 2^102021112601 is an apocalyptic number.

It is an amenable number.

102021112601 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021112601 is an equidigital number, since it uses as much as digits as its factorization.

102021112601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 102021112601 its reverse (106211120201), we get a palindrome (208232232802).

The spelling of 102021112601 in words is "one hundred two billion, twenty-one million, one hundred twelve thousand, six hundred one".