102021864071 has 2 divisors, whose sum is σ = 102021864072. Its totient is φ = 102021864070.

The previous prime is 102021864059. The next prime is 102021864101. The reversal of 102021864071 is 170468120201.

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-102021864071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102021864671) 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, 51010932035 + 51010932036.

It is an arithmetic number, because the mean of its divisors is an integer number (51010932036).

Almost surely, 2^102021864071 is an apocalyptic number.

102021864071 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021864071 is an equidigital number, since it uses as much as digits as its factorization.

102021864071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5376, while the sum is 32.

Adding to 102021864071 its reverse (170468120201), we get a palindrome (272489984272).

The spelling of 102021864071 in words is "one hundred two billion, twenty-one million, eight hundred sixty-four thousand, seventy-one".