13021002120 has 64 divisors (see below), whose sum is σ = 44643438720. Its totient is φ = 2976228864.

The previous prime is 13021002103. The next prime is 13021002133. The reversal of 13021002120 is 2120012031.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 13021002096 and 13021002105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7749757 + ... + 7751436.

It is an arithmetic number, because the mean of its divisors is an integer number (697553730).

Almost surely, 2^13021002120 is an apocalyptic number.

13021002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13021002120 is an abundant number, since it is smaller than the sum of its proper divisors (31622436600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13021002120 is a wasteful number, since it uses less digits than its factorization.

13021002120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15501214 (or 15501210 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 13021002120 its reverse (2120012031), we get a palindrome (15141014151).

The spelling of 13021002120 in words is "thirteen billion, twenty-one million, two thousand, one hundred twenty".