21331130430030 has 32 divisors (see below), whose sum is σ = 51389369754624. Its totient is φ = 5666672923296.

The previous prime is 21331130430019. The next prime is 21331130430079. The reversal of 21331130430030 is 3003403113312.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1351774774 + ... + 1351790553.

It is an arithmetic number, because the mean of its divisors is an integer number (1605917804832).

Almost surely, 2^{21331130430030} is an apocalyptic number.

21331130430030 is an abundant number, since it is smaller than the sum of its proper divisors (30058239324594).

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

21331130430030 is a wasteful number, since it uses less digits than its factorization.

21331130430030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703565600.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 21331130430030 its reverse (3003403113312), we get a palindrome (24334533543342).

The spelling of 21331130430030 in words is "twenty-one trillion, three hundred thirty-one billion, one hundred thirty million, four hundred thirty thousand, thirty".