102021863969 has 2 divisors, whose sum is σ = 102021863970. Its totient is φ = 102021863968.

The previous prime is 102021863959. The next prime is 102021864017. The reversal of 102021863969 is 969368120201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 87342118369 + 14679745600 = 295537^2 + 121160^2 .

It is a cyclic number.

It is not a de Polignac number, because 102021863969 - 2¹⁶ = 102021798433 is a prime.

It is a super-2 number, since 2×102021863969² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102021863959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010931984 + 51010931985.

It is an arithmetic number, because the mean of its divisors is an integer number (51010931985).

Almost surely, 2^102021863969 is an apocalyptic number.

It is an amenable number.

102021863969 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021863969 is an equidigital number, since it uses as much as digits as its factorization.

102021863969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The spelling of 102021863969 in words is "one hundred two billion, twenty-one million, eight hundred sixty-three thousand, nine hundred sixty-nine".