102123210434447 has 2 divisors, whose sum is σ = 102123210434448. Its totient is φ = 102123210434446.

The previous prime is 102123210434431. The next prime is 102123210434473. The reversal of 102123210434447 is 744434012321201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102123210434447 - 2⁴ = 102123210434431 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102123210434447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102123210434407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51061605217223 + 51061605217224.

It is an arithmetic number, because the mean of its divisors is an integer number (51061605217224).

Almost surely, 2^{102123210434447} is an apocalyptic number.

102123210434447 is a deficient number, since it is larger than the sum of its proper divisors (1).

102123210434447 is an equidigital number, since it uses as much as digits as its factorization.

102123210434447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 38.

Adding to 102123210434447 its reverse (744434012321201), we get a palindrome (846557222755648).

The spelling of 102123210434447 in words is "one hundred two trillion, one hundred twenty-three billion, two hundred ten million, four hundred thirty-four thousand, four hundred forty-seven".