1223333221300 has 72 divisors (see below), whose sum is σ = 2669491938456. Its totient is φ = 486596444160.

The previous prime is 1223333221217. The next prime is 1223333221303. The reversal of 1223333221300 is 31223333221.

It can be written as a sum of positive squares in 12 ways, for example, as 633810238884 + 589522982416 = 796122^2 + 767804^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223333221303) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51963132 + ... + 51986668.

It is an arithmetic number, because the mean of its divisors is an integer number (37076276923).

Almost surely, 2^{1223333221300} is an apocalyptic number.

1223333221300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1223333221300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1334745969228).

1223333221300 is an abundant number, since it is smaller than the sum of its proper divisors (1446158717156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1223333221300 is a wasteful number, since it uses less digits than its factorization.

1223333221300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26437 (or 26430 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 1223333221300 its reverse (31223333221), we get a palindrome (1254556554521).

The spelling of 1223333221300 in words is "one trillion, two hundred twenty-three billion, three hundred thirty-three million, two hundred twenty-one thousand, three hundred".