21102003332 has 12 divisors (see below), whose sum is σ = 37373428176. Its totient is φ = 10423881000.

The previous prime is 21102003331. The next prime is 21102003359. The reversal of 21102003332 is 23330020112.

It is a self number, because there is not a number n which added to its sum of digits gives 21102003332.

It is not an unprimeable number, because it can be changed into a prime (21102003331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31779794 + ... + 31780457.

It is an arithmetic number, because the mean of its divisors is an integer number (3114452348).

Almost surely, 2^21102003332 is an apocalyptic number.

It is an amenable number.

21102003332 is a deficient number, since it is larger than the sum of its proper divisors (16271424844).

21102003332 is a wasteful number, since it uses less digits than its factorization.

21102003332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63560338 (or 63560336 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 21102003332 its reverse (23330020112), we get a palindrome (44432023444).

The spelling of 21102003332 in words is "twenty-one billion, one hundred two million, three thousand, three hundred thirty-two".