123122212222 has 4 divisors (see below), whose sum is σ = 184683318336. Its totient is φ = 61561106110.

The previous prime is 123122212193. The next prime is 123122212261. The reversal of 123122212222 is 222212221321.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 123122212193 and 123122212202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30780553054 + ... + 30780553057.

It is an arithmetic number, because the mean of its divisors is an integer number (46170829584).

Almost surely, 2^123122212222 is an apocalyptic number.

123122212222 is a deficient number, since it is larger than the sum of its proper divisors (61561106114).

123122212222 is an equidigital number, since it uses as much as digits as its factorization.

123122212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61561106113.

The product of its digits is 768, while the sum is 22.

Adding to 123122212222 its reverse (222212221321), we get a palindrome (345334433543).

Subtracting 123122212222 from its reverse (222212221321), we obtain a palindrome (99090009099).

The spelling of 123122212222 in words is "one hundred twenty-three billion, one hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".