102100021103 has 2 divisors, whose sum is σ = 102100021104. Its totient is φ = 102100021102.

The previous prime is 102100021063. The next prime is 102100021169. The reversal of 102100021103 is 301120001201.

It is a weak prime.

It is an emirp because it is prime and its reverse (301120001201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102100021103 - 2¹⁰ = 102100020079 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100021193) 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, 51050010551 + 51050010552.

It is an arithmetic number, because the mean of its divisors is an integer number (51050010552).

Almost surely, 2^102100021103 is an apocalyptic number.

102100021103 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100021103 is an equidigital number, since it uses as much as digits as its factorization.

102100021103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 102100021103 its reverse (301120001201), we get a palindrome (403220022304).

The spelling of 102100021103 in words is "one hundred two billion, one hundred million, twenty-one thousand, one hundred three".