1223388833221 has 32 divisors (see below), whose sum is σ = 1399541760000. Its totient is φ = 1062246949632.

The previous prime is 1223388833197. The next prime is 1223388833239.

1223388833221 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 1223388833221 - 2²³ = 1223380444613 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 (1223388833521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2818540 + ... + 3223498.

It is an arithmetic number, because the mean of its divisors is an integer number (43735680000).

Almost surely, 2^{1223388833221} is an apocalyptic number.

It is an amenable number.

1223388833221 is a deficient number, since it is larger than the sum of its proper divisors (176152926779).

1223388833221 is a wasteful number, since it uses less digits than its factorization.

1223388833221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405241.

The product of its digits is 663552, while the sum is 46.

The spelling of 1223388833221 in words is "one trillion, two hundred twenty-three billion, three hundred eighty-eight million, eight hundred thirty-three thousand, two hundred twenty-one".