130023021 has 16 divisors (see below), whose sum is σ = 189485568. Its totient is φ = 78950400.

The previous prime is 130023007. The next prime is 130023031. The reversal of 130023021 is 120320031.

It is a happy number.

It is not a de Polignac number, because 130023021 - 2⁶ = 130022957 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 130022988 and 130023006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130023031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39540 + ... + 42701.

It is an arithmetic number, because the mean of its divisors is an integer number (11842848).

Almost surely, 2^130023021 is an apocalyptic number.

It is an amenable number.

130023021 is a deficient number, since it is larger than the sum of its proper divisors (59462547).

130023021 is a wasteful number, since it uses less digits than its factorization.

130023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82292.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 130023021 is about 11402.7637439351. The cubic root of 130023021 is about 506.6096026357.

Adding to 130023021 its reverse (120320031), we get a palindrome (250343052).

The spelling of 130023021 in words is "one hundred thirty million, twenty-three thousand, twenty-one".