102002120020019 has 2 divisors, whose sum is σ = 102002120020020. Its totient is φ = 102002120020018.

The previous prime is 102002120020007. The next prime is 102002120020057. The reversal of 102002120020019 is 910020021200201.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102002120020019 is a prime.

It is a super-2 number, since 2×102002120020019² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102002120010019) 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, 51001060010009 + 51001060010010.

It is an arithmetic number, because the mean of its divisors is an integer number (51001060010010).

Almost surely, 2^{102002120020019} is an apocalyptic number.

102002120020019 is a deficient number, since it is larger than the sum of its proper divisors (1).

102002120020019 is an equidigital number, since it uses as much as digits as its factorization.

102002120020019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The spelling of 102002120020019 in words is "one hundred two trillion, two billion, one hundred twenty million, twenty thousand, nineteen".