130123021 has 8 divisors (see below), whose sum is σ = 150102720. Its totient is φ = 110491008.

The previous prime is 130123009. The next prime is 130123061. The reversal of 130123021 is 120321031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 130123021 - 2⁵ = 130122989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130122992 and 130123010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130123061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86116 + ... + 87613.

It is an arithmetic number, because the mean of its divisors is an integer number (18762840).

Almost surely, 2^130123021 is an apocalyptic number.

It is an amenable number.

130123021 is a deficient number, since it is larger than the sum of its proper divisors (19979699).

130123021 is a wasteful number, since it uses less digits than its factorization.

130123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173843.

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

The square root of 130123021 is about 11407.1478030225. The cubic root of 130123021 is about 506.7394462530.

Adding to 130123021 its reverse (120321031), we get a palindrome (250444052).

The spelling of 130123021 in words is "one hundred thirty million, one hundred twenty-three thousand, twenty-one".