130621129 has 2 divisors, whose sum is σ = 130621130. Its totient is φ = 130621128.

The previous prime is 130621109. The next prime is 130621159. The reversal of 130621129 is 921126031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 115605504 + 15015625 = 10752^2 + 3875^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-130621129 is a prime.

It is not a weakly prime, because it can be changed into another prime (130621109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65310564 + 65310565.

It is an arithmetic number, because the mean of its divisors is an integer number (65310565).

Almost surely, 2^130621129 is an apocalyptic number.

It is an amenable number.

130621129 is a deficient number, since it is larger than the sum of its proper divisors (1).

130621129 is an equidigital number, since it uses as much as digits as its factorization.

130621129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 130621129 is about 11428.9601014266. The cubic root of 130621129 is about 507.3852186891.

The spelling of 130621129 in words is "one hundred thirty million, six hundred twenty-one thousand, one hundred twenty-nine".