21203103202 has 16 divisors (see below), whose sum is σ = 32049733824. Its totient is φ = 10520010000.

The previous prime is 21203103151. The next prime is 21203103211. The reversal of 21203103202 is 20230130212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 246877 + ... + 321487.

It is an arithmetic number, because the mean of its divisors is an integer number (2003108364).

Almost surely, 2^21203103202 is an apocalyptic number.

21203103202 is a deficient number, since it is larger than the sum of its proper divisors (10846630622).

21203103202 is a wasteful number, since it uses less digits than its factorization.

21203103202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75705.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 21203103202 its reverse (20230130212), we get a palindrome (41433233414).

The spelling of 21203103202 in words is "twenty-one billion, two hundred three million, one hundred three thousand, two hundred two".