102870030721 has 2 divisors, whose sum is σ = 102870030722. Its totient is φ = 102870030720.

The previous prime is 102870030689. The next prime is 102870030727. The reversal of 102870030721 is 127030078201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98761861696 + 4108169025 = 314264^2 + 64095^2 .

It is a cyclic number.

It is not a de Polignac number, because 102870030721 - 2⁵ = 102870030689 is a prime.

It is not a weakly prime, because it can be changed into another prime (102870030727) 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, 51435015360 + 51435015361.

It is an arithmetic number, because the mean of its divisors is an integer number (51435015361).

Almost surely, 2^102870030721 is an apocalyptic number.

It is an amenable number.

102870030721 is a deficient number, since it is larger than the sum of its proper divisors (1).

102870030721 is an equidigital number, since it uses as much as digits as its factorization.

102870030721 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4704, while the sum is 31.

The spelling of 102870030721 in words is "one hundred two billion, eight hundred seventy million, thirty thousand, seven hundred twenty-one".