1223030331221 has 16 divisors (see below), whose sum is σ = 1249637875200. Its totient is φ = 1196636777280.

The previous prime is 1223030331217. The next prime is 1223030331287. The reversal of 1223030331221 is 1221330303221.

It is a cyclic number.

It is not a de Polignac number, because 1223030331221 - 2² = 1223030331217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223030331521) 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, 117605180 + ... + 117615578.

It is an arithmetic number, because the mean of its divisors is an integer number (78102367200).

Almost surely, 2^{1223030331221} is an apocalyptic number.

It is an amenable number.

1223030331221 is a deficient number, since it is larger than the sum of its proper divisors (26607543979).

1223030331221 is a wasteful number, since it uses less digits than its factorization.

1223030331221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20444.

The product of its (nonzero) digits is 1296, while the sum is 23.

Adding to 1223030331221 its reverse (1221330303221), we get a palindrome (2444360634442).

The spelling of 1223030331221 in words is "one trillion, two hundred twenty-three billion, thirty million, three hundred thirty-one thousand, two hundred twenty-one".