21303133132 has 6 divisors (see below), whose sum is σ = 37280482988. Its totient is φ = 10651566564.

The previous prime is 21303133129. The next prime is 21303133153. The reversal of 21303133132 is 23133130312.

It is a super-3 number, since 3×21303133132³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2662891638 + ... + 2662891645.

Almost surely, 2^21303133132 is an apocalyptic number.

It is an amenable number.

21303133132 is a deficient number, since it is larger than the sum of its proper divisors (15977349856).

21303133132 is a wasteful number, since it uses less digits than its factorization.

21303133132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5325783287 (or 5325783285 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 22.

Adding to 21303133132 its reverse (23133130312), we get a palindrome (44436263444).

The spelling of 21303133132 in words is "twenty-one billion, three hundred three million, one hundred thirty-three thousand, one hundred thirty-two".