21323002211112 has 128 divisors (see below), whose sum is σ = 61248085770240. Its totient is φ = 6059770648320.

The previous prime is 21323002211081. The next prime is 21323002211153. The reversal of 21323002211112 is 21111220032312.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 31 ways as a sum of consecutive naturals, for example, 380760298 + ... + 380816294.

It is an arithmetic number, because the mean of its divisors is an integer number (478500670080).

Almost surely, 2^{21323002211112} 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 21323002211112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30624042885120).

21323002211112 is an abundant number, since it is smaller than the sum of its proper divisors (39925083559128).

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

21323002211112 is a wasteful number, since it uses less digits than its factorization.

21323002211112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68071 (or 68067 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 21323002211112 its reverse (21111220032312), we get a palindrome (42434222243424).

The spelling of 21323002211112 in words is "twenty-one trillion, three hundred twenty-three billion, two million, two hundred eleven thousand, one hundred twelve".