21011100303032 has 96 divisors (see below), whose sum is σ = 45954838566000. Its totient is φ = 8979820577280.

The previous prime is 21011100303007. The next prime is 21011100303041. The reversal of 21011100303032 is 23030300111012.

It is a self number, because there is not a number n which added to its sum of digits gives 21011100303032.

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 23 ways as a sum of consecutive naturals, for example, 251163932 + ... + 251247572.

Almost surely, 2^{21011100303032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21011100303032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22977419283000).

21011100303032 is an abundant number, since it is smaller than the sum of its proper divisors (24943738262968).

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

21011100303032 is a wasteful number, since it uses less digits than its factorization.

21011100303032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85429 (or 85418 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21011100303032 its reverse (23030300111012), we get a palindrome (44041400414044).

The spelling of 21011100303032 in words is "twenty-one trillion, eleven billion, one hundred million, three hundred three thousand, thirty-two".