102100120247 has 2 divisors, whose sum is σ = 102100120248. Its totient is φ = 102100120246.

The previous prime is 102100120237. The next prime is 102100120301. The reversal of 102100120247 is 742021001201.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 102100120247 - 2⁶ = 102100120183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102100120237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51050060123 + 51050060124.

It is an arithmetic number, because the mean of its divisors is an integer number (51050060124).

Almost surely, 2^102100120247 is an apocalyptic number.

102100120247 is a deficient number, since it is larger than the sum of its proper divisors (1).

102100120247 is an equidigital number, since it uses as much as digits as its factorization.

102100120247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 102100120247 its reverse (742021001201), we get a palindrome (844121121448).

The spelling of 102100120247 in words is "one hundred two billion, one hundred million, one hundred twenty thousand, two hundred forty-seven".