1223210123222 has 4 divisors (see below), whose sum is σ = 1834815184836. Its totient is φ = 611605061610.

The previous prime is 1223210123221. The next prime is 1223210123227. The reversal of 1223210123222 is 2223210123221.

It is a happy number.

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

It is a super-2 number, since 2×1223210123222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223210123221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305802530804 + ... + 305802530807.

It is an arithmetic number, because the mean of its divisors is an integer number (458703796209).

Almost surely, 2^{1223210123222} is an apocalyptic number.

1223210123222 is a deficient number, since it is larger than the sum of its proper divisors (611605061614).

1223210123222 is an equidigital number, since it uses as much as digits as its factorization.

1223210123222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611605061613.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1223210123222 its reverse (2223210123221), we get a palindrome (3446420246443).

Subtracting 1223210123222 from its reverse (2223210123221), we obtain a palindrome (999999999999).

The spelling of 1223210123222 in words is "one trillion, two hundred twenty-three billion, two hundred ten million, one hundred twenty-three thousand, two hundred twenty-two".