130440012010021 has 6 divisors (see below), whose sum is σ = 151736340501510. Its totient is φ = 111805724579976.

The previous prime is 130440012009973. The next prime is 130440012010051. The reversal of 130440012010021 is 120010210044031.

It can be written as a sum of positive squares in only one way, i.e., 75715319117025 + 54724692892996 = 8701455^2 + 7397614^2 .

It is not a de Polignac number, because 130440012010021 - 2¹¹ = 130440012007973 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 (130440012010051) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1331020530666 + ... + 1331020530763.

It is an arithmetic number, because the mean of its divisors is an integer number (25289390083585).

Almost surely, 2^{130440012010021} is an apocalyptic number.

It is an amenable number.

130440012010021 is a deficient number, since it is larger than the sum of its proper divisors (21296328491489).

130440012010021 is an equidigital number, since it uses as much as digits as its factorization.

130440012010021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2662041061443 (or 2662041061436 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 130440012010021 its reverse (120010210044031), we get a palindrome (250450222054052).

The spelling of 130440012010021 in words is "one hundred thirty trillion, four hundred forty billion, twelve million, ten thousand, twenty-one".