21111033323233 has 64 divisors (see below), whose sum is σ = 25615012921344. Its totient is φ = 17016690600000.

The previous prime is 21111033323197. The next prime is 21111033323243. The reversal of 21111033323233 is 33232333011112.

It is a happy number.

It is not a de Polignac number, because 21111033323233 - 2²¹ = 21111031226081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21111033323243) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2274156010 + ... + 2274165292.

It is an arithmetic number, because the mean of its divisors is an integer number (400234576896).

Almost surely, 2^{21111033323233} is an apocalyptic number.

It is an amenable number.

21111033323233 is a deficient number, since it is larger than the sum of its proper divisors (4503979598111).

21111033323233 is a wasteful number, since it uses less digits than its factorization.

21111033323233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10586.

The product of its (nonzero) digits is 5832, while the sum is 28.

Adding to 21111033323233 its reverse (33232333011112), we get a palindrome (54343366334345).

The spelling of 21111033323233 in words is "twenty-one trillion, one hundred eleven billion, thirty-three million, three hundred twenty-three thousand, two hundred thirty-three".