422121121212 has 48 divisors (see below), whose sum is σ = 1134519787520. Its totient is φ = 119656377792.

The previous prime is 422121121193. The next prime is 422121121243. The reversal of 422121121212 is 212121121224.

It is a Harshad number since it is a multiple of its sum of digits (21).

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 polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19773787 + ... + 19795122.

Almost surely, 2^422121121212 is an apocalyptic number.

422121121212 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

422121121212 is an abundant number, since it is smaller than the sum of its proper divisors (712398666308).

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

422121121212 is a wasteful number, since it uses less digits than its factorization.

422121121212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39569050 (or 39569048 counting only the distinct ones).

The product of its digits is 256, while the sum is 21.

Adding to 422121121212 its reverse (212121121224), we get a palindrome (634242242436).

The spelling of 422121121212 in words is "four hundred twenty-two billion, one hundred twenty-one million, one hundred twenty-one thousand, two hundred twelve".