1223364633221 has 16 divisors (see below), whose sum is σ = 1238457143808. Its totient is φ = 1208332944000.

The previous prime is 1223364633193. The next prime is 1223364633233.

1223364633221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223364633221 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 (1223364633521) 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, 139283396 + ... + 139292178.

It is an arithmetic number, because the mean of its divisors is an integer number (77403571488).

Almost surely, 2^{1223364633221} is an apocalyptic number.

It is an amenable number.

1223364633221 is a deficient number, since it is larger than the sum of its proper divisors (15092510587).

1223364633221 is a wasteful number, since it uses less digits than its factorization.

1223364633221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12052.

The product of its digits is 186624, while the sum is 38.

The spelling of 1223364633221 in words is "one trillion, two hundred twenty-three billion, three hundred sixty-four million, six hundred thirty-three thousand, two hundred twenty-one".