21103003352 has 16 divisors (see below), whose sum is σ = 39852796200. Its totient is φ = 10475591040.

The previous prime is 21103003351. The next prime is 21103003373. The reversal of 21103003352 is 25330030112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21103003351) 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, 9487649 + ... + 9489872.

Almost surely, 2^21103003352 is an apocalyptic number.

It is an amenable number.

21103003352 is a deficient number, since it is larger than the sum of its proper divisors (18749792848).

21103003352 is a wasteful number, since it uses less digits than its factorization.

21103003352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18977666 (or 18977662 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 20.

Adding to 21103003352 its reverse (25330030112), we get a palindrome (46433033464).

The spelling of 21103003352 in words is "twenty-one billion, one hundred three million, three thousand, three hundred fifty-two".