300129689221 has 2 divisors, whose sum is σ = 300129689222. Its totient is φ = 300129689220.

The previous prime is 300129689143. The next prime is 300129689257. The reversal of 300129689221 is 122986921003.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179971092900 + 120158596321 = 424230^2 + 346639^2 .

It is a cyclic number.

It is not a de Polignac number, because 300129689221 - 2¹¹ = 300129687173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (300129689261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 150064844610 + 150064844611.

It is an arithmetic number, because the mean of its divisors is an integer number (150064844611).

Almost surely, 2^300129689221 is an apocalyptic number.

It is an amenable number.

300129689221 is a deficient number, since it is larger than the sum of its proper divisors (1).

300129689221 is an equidigital number, since it uses as much as digits as its factorization.

300129689221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 300129689221 in words is "three hundred billion, one hundred twenty-nine million, six hundred eighty-nine thousand, two hundred twenty-one".