21122312321322 has 24 divisors (see below), whose sum is σ = 46072157753700. Its totient is φ = 6993517277760.

The previous prime is 21122312321311. The next prime is 21122312321399. The reversal of 21122312321322 is 22312321322112.

21122312321322 is a `hidden beast` number, since 2 + 1 + 1 + 2 + 2 + 3 + 12 + 321 + 322 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 20883903751881 + 238408569441 = 4569891^2 + 488271^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3937788579 + ... + 3937793942.

Almost surely, 2^{21122312321322} is an apocalyptic number.

21122312321322 is an abundant number, since it is smaller than the sum of its proper divisors (24949845432378).

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

21122312321322 is a wasteful number, since it uses less digits than its factorization.

21122312321322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7875582678 (or 7875582675 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 21122312321322 its reverse (22312321322112), we get a palindrome (43434633643434).

The spelling of 21122312321322 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred twelve million, three hundred twenty-one thousand, three hundred twenty-two".