21111112331322 has 64 divisors (see below), whose sum is σ = 45944040046464. Its totient is φ = 6428149079040.

The previous prime is 21111112331317. The next prime is 21111112331377. The reversal of 21111112331322 is 22313321111112.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21111112331292 and 21111112331301.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6470422 + ... + 9169982.

It is an arithmetic number, because the mean of its divisors is an integer number (717875625726).

Almost surely, 2^{21111112331322} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21111112331322, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22972020023232).

21111112331322 is an abundant number, since it is smaller than the sum of its proper divisors (24832927715142).

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

21111112331322 is a wasteful number, since it uses less digits than its factorization.

21111112331322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2700623.

The product of its digits is 432, while the sum is 24.

Adding to 21111112331322 its reverse (22313321111112), we get a palindrome (43424433442434).

The spelling of 21111112331322 in words is "twenty-one trillion, one hundred eleven billion, one hundred twelve million, three hundred thirty-one thousand, three hundred twenty-two".