422444353212 has 384 divisors, whose sum is σ = 1368773683200. Its totient is φ = 109923028992.

The previous prime is 422444353183. The next prime is 422444353217. The reversal of 422444353212 is 212353444224.

422444353212 is a `hidden beast` number, since 4 + 2 + 2 + 4 + 4 + 435 + 3 + 212 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422444353217) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 60233818 + ... + 60240830.

It is an arithmetic number, because the mean of its divisors is an integer number (3564514800).

Almost surely, 2^422444353212 is an apocalyptic number.

422444353212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 422444353212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (684386841600).

422444353212 is an abundant number, since it is smaller than the sum of its proper divisors (946329329988).

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

422444353212 is a wasteful number, since it uses less digits than its factorization.

422444353212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7202 (or 7194 counting only the distinct ones).

The product of its digits is 184320, while the sum is 36.

Adding to 422444353212 its reverse (212353444224), we get a palindrome (634797797436).

The spelling of 422444353212 in words is "four hundred twenty-two billion, four hundred forty-four million, three hundred fifty-three thousand, two hundred twelve".