1223644603321 has 32 divisors (see below), whose sum is σ = 1496232352512. Its totient is φ = 976841041920.

The previous prime is 1223644603271. The next prime is 1223644603327. The reversal of 1223644603321 is 1233064463221.

It is not a de Polignac number, because 1223644603321 - 2¹⁵ = 1223644570553 is a prime.

It is a super-2 number, since 2×1223644603321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223644603327) 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, 5049666 + ... + 5286436.

It is an arithmetic number, because the mean of its divisors is an integer number (46757261016).

Almost surely, 2^{1223644603321} is an apocalyptic number.

It is an amenable number.

1223644603321 is a deficient number, since it is larger than the sum of its proper divisors (272587749191).

1223644603321 is a wasteful number, since it uses less digits than its factorization.

1223644603321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237249.

The product of its (nonzero) digits is 124416, while the sum is 37.

The spelling of 1223644603321 in words is "one trillion, two hundred twenty-three billion, six hundred forty-four million, six hundred three thousand, three hundred twenty-one".