212221123122 has 16 divisors (see below), whose sum is σ = 425400360480. Its totient is φ = 70580688672.

The previous prime is 212221123117. The next prime is 212221123159. The reversal of 212221123122 is 221321122212.

212221123122 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39918547 + ... + 39923862.

It is an arithmetic number, because the mean of its divisors is an integer number (26587522530).

Almost surely, 2^212221123122 is an apocalyptic number.

212221123122 is an abundant number, since it is smaller than the sum of its proper divisors (213179237358).

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

212221123122 is a wasteful number, since it uses less digits than its factorization.

212221123122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79842857.

The product of its digits is 384, while the sum is 21.

Adding to 212221123122 its reverse (221321122212), we get a palindrome (433542245334).

The spelling of 212221123122 in words is "two hundred twelve billion, two hundred twenty-one million, one hundred twenty-three thousand, one hundred twenty-two".