20003123210 has 16 divisors (see below), whose sum is σ = 41149282176. Its totient is φ = 6858213648.

The previous prime is 20003123197. The next prime is 20003123213. The reversal of 20003123210 is 1232130002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (20003123213) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 142879382 + ... + 142879521.

It is an arithmetic number, because the mean of its divisors is an integer number (2571830136).

Almost surely, 2^20003123210 is an apocalyptic number.

20003123210 is an abundant number, since it is smaller than the sum of its proper divisors (21146158966).

20003123210 is a wasteful number, since it uses less digits than its factorization.

20003123210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285758917.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20003123210 its reverse (1232130002), we get a palindrome (21235253212).

The spelling of 20003123210 in words is "twenty billion, three million, one hundred twenty-three thousand, two hundred ten".