2123123222 has 16 divisors (see below), whose sum is σ = 3508603344. Its totient is φ = 955500000.

The previous prime is 2123123221. The next prime is 2123123227. The reversal of 2123123222 is 2223213212.

It is a happy number.

It is a super-2 number, since 2×2123123222² = 9015304431591322568, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2123123194 and 2123123203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123123221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475529 + ... + 479972.

It is an arithmetic number, because the mean of its divisors is an integer number (219287709).

Almost surely, 2^2123123222 is an apocalyptic number.

2123123222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2123123222 is a deficient number, since it is larger than the sum of its proper divisors (1385480122).

2123123222 is a wasteful number, since it uses less digits than its factorization.

2123123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955615.

The product of its digits is 576, while the sum is 20.

The square root of 2123123222 is about 46077.3612742744. The cubic root of 2123123222 is about 1285.2621956354.

Adding to 2123123222 its reverse (2223213212), we get a palindrome (4346336434).

The spelling of 2123123222 in words is "two billion, one hundred twenty-three million, one hundred twenty-three thousand, two hundred twenty-two".