122221222222 has 8 divisors (see below), whose sum is σ = 199998363672. Its totient is φ = 55555101000.

The previous prime is 122221222219. The next prime is 122221222223. The reversal of 122221222222 is 222222122221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×122221222222² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 5555510101 = 122221222222 / (1 + 2 + 2 + 2 + 2 + 1 + 2 + 2 + 2 + 2 + 2 + 2).

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 = 122221222193 and 122221222202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122221222223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2777755029 + ... + 2777755072.

It is an arithmetic number, because the mean of its divisors is an integer number (24999795459).

Almost surely, 2^122221222222 is an apocalyptic number.

122221222222 is a deficient number, since it is larger than the sum of its proper divisors (77777141450).

122221222222 is a wasteful number, since it uses less digits than its factorization.

122221222222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555510114.

The product of its digits is 1024, while the sum is 22.

Adding to 122221222222 its reverse (222222122221), we get a palindrome (344443344443).

It can be divided in two parts, 122221 and 222222, that added together give a palindrome (344443).

The spelling of 122221222222 in words is "one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred twenty-two".