22122222212222 has 48 divisors (see below), whose sum is σ = 37437950380032. Its totient is φ = 9722717550000.

The previous prime is 22122222212221. The next prime is 22122222212231. The reversal of 22122222212222 is 22221222222122.

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 = 22122222212191 and 22122222212200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122222212221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23879897 + ... + 24788987.

It is an arithmetic number, because the mean of its divisors is an integer number (779957299584).

Almost surely, 2^{22122222212222} is an apocalyptic number.

22122222212222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22122222212222 is a deficient number, since it is larger than the sum of its proper divisors (15315728167810).

22122222212222 is a wasteful number, since it uses less digits than its factorization.

22122222212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910317 (or 910286 counting only the distinct ones).

The product of its digits is 4096, while the sum is 26.

Adding to 22122222212222 its reverse (22221222222122), we get a palindrome (44343444434344).

It can be divided in two parts, 221222222122 and 22, that multiplied together give a palindrome (4866888886684).

The spelling of 22122222212222 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".