10003121320 has 32 divisors (see below), whose sum is σ = 22555260000. Its totient is φ = 3992673088.

The previous prime is 10003121267. The next prime is 10003121327. The reversal of 10003121320 is 2312130001.

It is a super-2 number, since 2×10003121320² (a number of 21 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 10003121320.

It is not an unprimeable number, because it can be changed into a prime (10003121327) 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, 249070 + ... + 286429.

It is an arithmetic number, because the mean of its divisors is an integer number (704851875).

Almost surely, 2^10003121320 is an apocalyptic number.

10003121320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10003121320 is an abundant number, since it is smaller than the sum of its proper divisors (12552138680).

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

10003121320 is a wasteful number, since it uses less digits than its factorization.

10003121320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535977 (or 535973 counting only the distinct ones).

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

Adding to 10003121320 its reverse (2312130001), we get a palindrome (12315251321).

The spelling of 10003121320 in words is "ten billion, three million, one hundred twenty-one thousand, three hundred twenty".