21030003232 has 24 divisors (see below), whose sum is σ = 47317507776. Its totient is φ = 9012858432.

The previous prime is 21030003227. The next prime is 21030003233. The reversal of 21030003232 is 23230003012.

It is a super-2 number, since 2×21030003232² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is not an unprimeable number, because it can be changed into a prime (21030003233) 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, 46941748 + ... + 46942195.

It is an arithmetic number, because the mean of its divisors is an integer number (1971562824).

Almost surely, 2^21030003232 is an apocalyptic number.

It is an amenable number.

21030003232 is an abundant number, since it is smaller than the sum of its proper divisors (26287504544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21030003232 is an equidigital number, since it uses as much as digits as its factorization.

21030003232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93883960 (or 93883952 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 21030003232 its reverse (23230003012), we get a palindrome (44260006244).

The spelling of 21030003232 in words is "twenty-one billion, thirty million, three thousand, two hundred thirty-two".