130121816 has 32 divisors (see below), whose sum is σ = 266680080. Its totient is φ = 59030400.

The previous prime is 130121813. The next prime is 130121819. The reversal of 130121816 is 618121031.

It is an interprime number because it is at equal distance from previous prime (130121813) and next prime (130121819).

It is a junction number, because it is equal to n+sod(n) for n = 130121791 and 130121800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130121813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57050 + ... + 59286.

Almost surely, 2^130121816 is an apocalyptic number.

It is an amenable number.

130121816 is an abundant number, since it is smaller than the sum of its proper divisors (136558264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

130121816 is a wasteful number, since it uses less digits than its factorization.

130121816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915 (or 2911 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 130121816 is about 11407.0949851397. The cubic root of 130121816 is about 506.7378820334.

Adding to 130121816 its reverse (618121031), we get a palindrome (748242847).

The spelling of 130121816 in words is "one hundred thirty million, one hundred twenty-one thousand, eight hundred sixteen".