130232021 has 2 divisors, whose sum is σ = 130232022. Its totient is φ = 130232020.

The previous prime is 130232017. The next prime is 130232027. The reversal of 130232021 is 120232031.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126675025 + 3556996 = 11255^2 + 1886^2 .

It is an emirp because it is prime and its reverse (120232031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130232021 - 2² = 130232017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 130231987 and 130232005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130232027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65116010 + 65116011.

It is an arithmetic number, because the mean of its divisors is an integer number (65116011).

Almost surely, 2^130232021 is an apocalyptic number.

It is an amenable number.

130232021 is a deficient number, since it is larger than the sum of its proper divisors (1).

130232021 is an equidigital number, since it uses as much as digits as its factorization.

130232021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 130232021 is about 11411.9245090388. The cubic root of 130232021 is about 506.8809000445.

Adding to 130232021 its reverse (120232031), we get a palindrome (250464052).

The spelling of 130232021 in words is "one hundred thirty million, two hundred thirty-two thousand, twenty-one".