10003002120 has 128 divisors (see below), whose sum is σ = 33765696000. Its totient is φ = 2633679360.

The previous prime is 10003002091. The next prime is 10003002157. The reversal of 10003002120 is 2120030001.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26700 + ... + 143940.

It is an arithmetic number, because the mean of its divisors is an integer number (263794500).

Almost surely, 2^10003002120 is an apocalyptic number.

10003002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 10003002120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16882848000).

10003002120 is an abundant number, since it is smaller than the sum of its proper divisors (23762693880).

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

10003002120 is a wasteful number, since it uses less digits than its factorization.

10003002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117340 (or 117330 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 10003002120 its reverse (2120030001), we get a palindrome (12123032121).

The spelling of 10003002120 in words is "ten billion, three million, two thousand, one hundred twenty".