21332403002 has 8 divisors (see below), whose sum is σ = 32007892500. Its totient is φ = 10663105504.

The previous prime is 21332402989. The next prime is 21332403013. The reversal of 21332403002 is 20030423312.

It can be written as a sum of positive squares in 2 ways, for example, as 21167049121 + 165353881 = 145489^2 + 12859^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21332403002² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1539377 + ... + 1553172.

Almost surely, 2^21332403002 is an apocalyptic number.

21332403002 is a deficient number, since it is larger than the sum of its proper divisors (10675489498).

21332403002 is a wasteful number, since it uses less digits than its factorization.

21332403002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3096000.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 21332403002 its reverse (20030423312), we get a palindrome (41362826314).

The spelling of 21332403002 in words is "twenty-one billion, three hundred thirty-two million, four hundred three thousand, two".