1223223233221 has 16 divisors (see below), whose sum is σ = 1348503811200. Its totient is φ = 1100303224000.

The previous prime is 1223223233201. The next prime is 1223223233257. The reversal of 1223223233221 is 1223323223221.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223223233221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223223233221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223223233201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1378935 + ... + 2085163.

It is an arithmetic number, because the mean of its divisors is an integer number (84281488200).

Almost surely, 2^{1223223233221} is an apocalyptic number.

1223223233221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1223223233221 is a deficient number, since it is larger than the sum of its proper divisors (125280577979).

1223223233221 is a wasteful number, since it uses less digits than its factorization.

1223223233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707900.

The product of its digits is 10368, while the sum is 28.

Adding to 1223223233221 its reverse (1223323223221), we get a palindrome (2446546456442).

The spelling of 1223223233221 in words is "one trillion, two hundred twenty-three billion, two hundred twenty-three million, two hundred thirty-three thousand, two hundred twenty-one".