21321131232222 has 12 divisors (see below), whose sum is σ = 46195784336520. Its totient is φ = 7107043744068.

The previous prime is 21321131232161. The next prime is 21321131232253. The reversal of 21321131232222 is 22223213112312.

21321131232222 is a `hidden beast` number, since 2 + 1 + 3 + 2 + 1 + 1 + 312 + 322 + 22 = 666.

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

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 592253645322 + ... + 592253645357.

It is an arithmetic number, because the mean of its divisors is an integer number (3849648694710).

Almost surely, 2^{21321131232222} is an apocalyptic number.

21321131232222 is an abundant number, since it is smaller than the sum of its proper divisors (24874653104298).

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

21321131232222 is a wasteful number, since it uses less digits than its factorization.

21321131232222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184507290687 (or 1184507290684 counting only the distinct ones).

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

Adding to 21321131232222 its reverse (22223213112312), we get a palindrome (43544344344534).

The spelling of 21321131232222 in words is "twenty-one trillion, three hundred twenty-one billion, one hundred thirty-one million, two hundred thirty-two thousand, two hundred twenty-two".