21331101030 has 32 divisors (see below), whose sum is σ = 51301555200. Its totient is φ = 5676414432.

The previous prime is 21331101019. The next prime is 21331101059. The reversal of 21331101030 is 3010113312.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 727840 + ... + 756579.

It is an arithmetic number, because the mean of its divisors is an integer number (1603173600).

Almost surely, 2^21331101030 is an apocalyptic number.

21331101030 is an abundant number, since it is smaller than the sum of its proper divisors (29970454170).

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

21331101030 is a wasteful number, since it uses less digits than its factorization.

21331101030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1484908.

The product of its (nonzero) digits is 54, while the sum is 15.

Adding to 21331101030 its reverse (3010113312), we get a palindrome (24341214342).

The spelling of 21331101030 in words is "twenty-one billion, three hundred thirty-one million, one hundred one thousand, thirty".