212222121222122 has 24 divisors (see below), whose sum is σ = 349907081010816. Its totient is φ = 96463589805000.

The previous prime is 212222121222121. The next prime is 212222121222161. The reversal of 212222121222122 is 221222121222212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212222121222091 and 212222121222100.

It is not an unprimeable number, because it can be changed into a prime (212222121222121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18795047 + ... + 27887237.

It is an arithmetic number, because the mean of its divisors is an integer number (14579461708784).

Almost surely, 2^{212222121222122} is an apocalyptic number.

212222121222122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

212222121222122 is a deficient number, since it is larger than the sum of its proper divisors (137684959788694).

212222121222122 is a wasteful number, since it uses less digits than its factorization.

212222121222122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9188666 (or 9188655 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 212222121222122 its reverse (221222121222212), we get a palindrome (433444242444334).

The spelling of 212222121222122 in words is "two hundred twelve trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-two thousand, one hundred twenty-two".