31224212221422 has 512 divisors, whose sum is σ = 76874914529280. Its totient is φ = 8344332288000.

The previous prime is 31224212221373. The next prime is 31224212221469. The reversal of 31224212221422 is 22412221242213.

It is a self number, because there is not a number n which added to its sum of digits gives 31224212221422.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 64115425263 + ... + 64115425749.

It is an arithmetic number, because the mean of its divisors is an integer number (150146317440).

Almost surely, 2^{31224212221422} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31224212221422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38437457264640).

31224212221422 is an abundant number, since it is smaller than the sum of its proper divisors (45650702307858).

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

31224212221422 is a wasteful number, since it uses less digits than its factorization.

31224212221422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1008.

The product of its digits is 12288, while the sum is 30.

Adding to 31224212221422 its reverse (22412221242213), we get a palindrome (53636433463635).

The spelling of 31224212221422 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred twelve million, two hundred twenty-one thousand, four hundred twenty-two".