130440241010021 has 4 divisors (see below), whose sum is σ = 130468154612172. Its totient is φ = 130412327407872.

The previous prime is 130440241010003. The next prime is 130440241010099. The reversal of 130440241010021 is 120010142044031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 114806639025796 + 15633601984225 = 10714786^2 + 3953935^2 .

It is a cyclic number.

It is not a de Polignac number, because 130440241010021 - 2²² = 130440236815717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130440241070021) 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, 13956794066 + ... + 13956803411.

It is an arithmetic number, because the mean of its divisors is an integer number (32617038653043).

Almost surely, 2^{130440241010021} is an apocalyptic number.

It is an amenable number.

130440241010021 is a deficient number, since it is larger than the sum of its proper divisors (27913602151).

130440241010021 is an equidigital number, since it uses as much as digits as its factorization.

130440241010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27913602150.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 130440241010021 its reverse (120010142044031), we get a palindrome (250450383054052).

The spelling of 130440241010021 in words is "one hundred thirty trillion, four hundred forty billion, two hundred forty-one million, ten thousand, twenty-one".