21203103130 has 32 divisors (see below), whose sum is σ = 41817047040. Its totient is φ = 7676541120.

The previous prime is 21203103113. The next prime is 21203103133. The reversal of 21203103130 is 3130130212.

It is not an unprimeable number, because it can be changed into a prime (21203103133) 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, 395674 + ... + 446053.

It is an arithmetic number, because the mean of its divisors is an integer number (1306782720).

Almost surely, 2^21203103130 is an apocalyptic number.

21203103130 is a deficient number, since it is larger than the sum of its proper divisors (20613943910).

21203103130 is a wasteful number, since it uses less digits than its factorization.

21203103130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 841974.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 21203103130 its reverse (3130130212), we get a palindrome (24333233342).

The spelling of 21203103130 in words is "twenty-one billion, two hundred three million, one hundred three thousand, one hundred thirty".