130440102021 has 24 divisors (see below), whose sum is σ = 189961887960. Its totient is φ = 86246578176.

The previous prime is 130440101989. The next prime is 130440102073. The reversal of 130440102021 is 120201044031.

130440102021 is a `hidden beast` number, since 13 + 0 + 440 + 10 + 202 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22257656100 + 108182445921 = 149190^2 + 328911^2 .

It is not a de Polignac number, because 130440102021 - 2⁵ = 130440101989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130440101985 and 130440102003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440102521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1319701 + ... + 1415093.

It is an arithmetic number, because the mean of its divisors is an integer number (7915078665).

Almost surely, 2^130440102021 is an apocalyptic number.

It is an amenable number.

130440102021 is a deficient number, since it is larger than the sum of its proper divisors (59521785939).

130440102021 is a wasteful number, since it uses less digits than its factorization.

130440102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96645 (or 96642 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 130440102021 its reverse (120201044031), we get a palindrome (250641146052).

The spelling of 130440102021 in words is "one hundred thirty billion, four hundred forty million, one hundred two thousand, twenty-one".