21011112303330 has 128 divisors (see below), whose sum is σ = 52539007931136. Its totient is φ = 5372755660800.

The previous prime is 21011112303317. The next prime is 21011112303331. The reversal of 21011112303330 is 3330321111012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21011112303297 and 21011112303306.

It is not an unprimeable number, because it can be changed into a prime (21011112303331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 106942485 + ... + 107138775.

It is an arithmetic number, because the mean of its divisors is an integer number (410460999462).

Almost surely, 2^{21011112303330} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21011112303330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26269503965568).

21011112303330 is an abundant number, since it is smaller than the sum of its proper divisors (31527895627806).

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

21011112303330 is a wasteful number, since it uses less digits than its factorization.

21011112303330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197732.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 21011112303330 its reverse (3330321111012), we get a palindrome (24341433414342).

The spelling of 21011112303330 in words is "twenty-one trillion, eleven billion, one hundred twelve million, three hundred three thousand, three hundred thirty".