102020210099 has 2 divisors, whose sum is σ = 102020210100. Its totient is φ = 102020210098.

The previous prime is 102020210063. The next prime is 102020210119. The reversal of 102020210099 is 990012020201.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (990012020201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102020210099 - 2⁸ = 102020209843 is a prime.

It is not a weakly prime, because it can be changed into another prime (102020210599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010105049 + 51010105050.

It is an arithmetic number, because the mean of its divisors is an integer number (51010105050).

Almost surely, 2^102020210099 is an apocalyptic number.

102020210099 is a deficient number, since it is larger than the sum of its proper divisors (1).

102020210099 is an equidigital number, since it uses as much as digits as its factorization.

102020210099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 26.

It can be divided in two parts, 1020202 and 10099, that added together give a palindrome (1030301).

The spelling of 102020210099 in words is "one hundred two billion, twenty million, two hundred ten thousand, ninety-nine".