130021002321 has 16 divisors (see below), whose sum is σ = 198151133184. Its totient is φ = 74288756304.

The previous prime is 130021002317. The next prime is 130021002337. The reversal of 130021002321 is 123200120031.

It is not a de Polignac number, because 130021002321 - 2² = 130021002317 is a prime.

It is a super-2 number, since 2×130021002321² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130021002321.

It is not an unprimeable number, because it can be changed into a prime (130021202321) 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, 192985 + ... + 545238.

It is an arithmetic number, because the mean of its divisors is an integer number (12384445824).

Almost surely, 2^130021002321 is an apocalyptic number.

It is an amenable number.

130021002321 is a deficient number, since it is larger than the sum of its proper divisors (68130130863).

130021002321 is an equidigital number, since it uses as much as digits as its factorization.

130021002321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 746620.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 130021002321 its reverse (123200120031), we get a palindrome (253221122352).

The spelling of 130021002321 in words is "one hundred thirty billion, twenty-one million, two thousand, three hundred twenty-one".