130001023021 has 2 divisors, whose sum is σ = 130001023022. Its totient is φ = 130001023020.

The previous prime is 130001022989. The next prime is 130001023069. The reversal of 130001023021 is 120320100031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129806001796 + 195021225 = 360286^2 + 13965^2 .

It is a cyclic number.

It is not a de Polignac number, because 130001023021 - 2⁵ = 130001022989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130001022992 and 130001023010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130001023091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65000511510 + 65000511511.

It is an arithmetic number, because the mean of its divisors is an integer number (65000511511).

Almost surely, 2^130001023021 is an apocalyptic number.

It is an amenable number.

130001023021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130001023021 is an equidigital number, since it uses as much as digits as its factorization.

130001023021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36, while the sum is 13.

Adding to 130001023021 its reverse (120320100031), we get a palindrome (250321123052).

The spelling of 130001023021 in words is "one hundred thirty billion, one million, twenty-three thousand, twenty-one".