422552212012 has 24 divisors (see below), whose sum is σ = 863085371904. Its totient is φ = 177240744912.

The previous prime is 422552211959. The next prime is 422552212013. The reversal of 422552212012 is 210212255224.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (422552212013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160542838 + ... + 160545469.

It is an arithmetic number, because the mean of its divisors is an integer number (35961890496).

Almost surely, 2^422552212012 is an apocalyptic number.

It is an amenable number.

422552212012 is an abundant number, since it is smaller than the sum of its proper divisors (440533159892).

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

422552212012 is a wasteful number, since it uses less digits than its factorization.

422552212012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321088365 (or 321088363 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

Adding to 422552212012 its reverse (210212255224), we get a palindrome (632764467236).

The spelling of 422552212012 in words is "four hundred twenty-two billion, five hundred fifty-two million, two hundred twelve thousand, twelve".