1220123222 has 4 divisors (see below), whose sum is σ = 1830184836. Its totient is φ = 610061610.

The previous prime is 1220123207. The next prime is 1220123227. The reversal of 1220123222 is 2223210221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2223210221 = 97 ⋅22919693.

It is a super-2 number, since 2×1220123222² = 2977401353727322568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1220123222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220123227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305030804 + ... + 305030807.

It is an arithmetic number, because the mean of its divisors is an integer number (457546209).

Almost surely, 2^1220123222 is an apocalyptic number.

1220123222 is a deficient number, since it is larger than the sum of its proper divisors (610061614).

1220123222 is an equidigital number, since it uses as much as digits as its factorization.

1220123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 610061613.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 1220123222 is about 34930.2622664073. The cubic root of 1220123222 is about 1068.5657033559.

Adding to 1220123222 its reverse (2223210221), we get a palindrome (3443333443).

The spelling of 1220123222 in words is "one billion, two hundred twenty million, one hundred twenty-three thousand, two hundred twenty-two".