102021130049 has 2 divisors, whose sum is σ = 102021130050. Its totient is φ = 102021130048.

The previous prime is 102021130007. The next prime is 102021130051. The reversal of 102021130049 is 940031120201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102011888449 + 9241600 = 319393^2 + 3040^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102021130049 is a prime.

Together with 102021130051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (102021130649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51010565024 + 51010565025.

It is an arithmetic number, because the mean of its divisors is an integer number (51010565025).

Almost surely, 2^102021130049 is an apocalyptic number.

It is an amenable number.

102021130049 is a deficient number, since it is larger than the sum of its proper divisors (1).

102021130049 is an equidigital number, since it uses as much as digits as its factorization.

102021130049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 23.

The spelling of 102021130049 in words is "one hundred two billion, twenty-one million, one hundred thirty thousand, forty-nine".