21033103132 has 12 divisors (see below), whose sum is σ = 38745190120. Its totient is φ = 9963048816.

The previous prime is 21033103097. The next prime is 21033103187. The reversal of 21033103132 is 23130133012.

It is a super-2 number, since 2×21033103132² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

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, 138375603 + ... + 138375754.

Almost surely, 2^21033103132 is an apocalyptic number.

It is an amenable number.

21033103132 is a deficient number, since it is larger than the sum of its proper divisors (17712086988).

21033103132 is a wasteful number, since it uses less digits than its factorization.

21033103132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276751380 (or 276751378 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 21033103132 its reverse (23130133012), we get a palindrome (44163236144).

The spelling of 21033103132 in words is "twenty-one billion, thirty-three million, one hundred three thousand, one hundred thirty-two".