130689121 has 4 divisors (see below), whose sum is σ = 131265072. Its totient is φ = 130113172.

The previous prime is 130689101. The next prime is 130689127. The reversal of 130689121 is 121986031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121986031 = 61 ⋅1999771.

It is a cyclic number.

It is not a de Polignac number, because 130689121 - 2⁵ = 130689089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130689127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287635 + ... + 288088.

It is an arithmetic number, because the mean of its divisors is an integer number (32816268).

Almost surely, 2^130689121 is an apocalyptic number.

It is an amenable number.

130689121 is a deficient number, since it is larger than the sum of its proper divisors (575951).

130689121 is an equidigital number, since it uses as much as digits as its factorization.

130689121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575950.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 130689121 is about 11431.9342632820. The cubic root of 130689121 is about 507.4732395476.

The spelling of 130689121 in words is "one hundred thirty million, six hundred eighty-nine thousand, one hundred twenty-one".