102990817229 has 2 divisors, whose sum is σ = 102990817230. Its totient is φ = 102990817228.

The previous prime is 102990817159. The next prime is 102990817243. The reversal of 102990817229 is 922718099201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67898288329 + 35092528900 = 260573^2 + 187330^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-102990817229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (102990817129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51495408614 + 51495408615.

It is an arithmetic number, because the mean of its divisors is an integer number (51495408615).

Almost surely, 2^102990817229 is an apocalyptic number.

It is an amenable number.

102990817229 is a deficient number, since it is larger than the sum of its proper divisors (1).

102990817229 is an equidigital number, since it uses as much as digits as its factorization.

102990817229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 50.

The spelling of 102990817229 in words is "one hundred two billion, nine hundred ninety million, eight hundred seventeen thousand, two hundred twenty-nine".