123220222 has 4 divisors (see below), whose sum is σ = 184830336. Its totient is φ = 61610110.

The previous prime is 123220219. The next prime is 123220231. The reversal of 123220222 is 222022321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 222022321 = 2069 ⋅107309.

It is a junction number, because it is equal to n+sod(n) for n = 123220196 and 123220205.

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, 30805054 + ... + 30805057.

It is an arithmetic number, because the mean of its divisors is an integer number (46207584).

Almost surely, 2^123220222 is an apocalyptic number.

123220222 is a deficient number, since it is larger than the sum of its proper divisors (61610114).

123220222 is an equidigital number, since it uses as much as digits as its factorization.

123220222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61610113.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 123220222 is about 11100.4604409006. The cubic root of 123220222 is about 497.6156101111.

Adding to 123220222 its reverse (222022321), we get a palindrome (345242543).

The spelling of 123220222 in words is "one hundred twenty-three million, two hundred twenty thousand, two hundred twenty-two".