20121130003 has 16 divisors (see below), whose sum is σ = 22147614720. Its totient is φ = 18163663776.

The previous prime is 20121129989. The next prime is 20121130013. The reversal of 20121130003 is 30003112102.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20121130003 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121130013) 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, 793426 + ... + 818392.

It is an arithmetic number, because the mean of its divisors is an integer number (1384225920).

Almost surely, 2^20121130003 is an apocalyptic number.

20121130003 is a deficient number, since it is larger than the sum of its proper divisors (2026484717).

20121130003 is a wasteful number, since it uses less digits than its factorization.

20121130003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26346.

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

Adding to 20121130003 its reverse (30003112102), we get a palindrome (50124242105).

The spelling of 20121130003 in words is "twenty billion, one hundred twenty-one million, one hundred thirty thousand, three".