1223011213320 has 192 divisors, whose sum is σ = 4045303442880. Its totient is φ = 294047083008.

The previous prime is 1223011213279. The next prime is 1223011213339. The reversal of 1223011213320 is 233121103221.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2672439 + ... + 3096441.

It is an arithmetic number, because the mean of its divisors is an integer number (21069288765).

Almost surely, 2^{1223011213320} is an apocalyptic number.

1223011213320 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 1223011213320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022651721440).

1223011213320 is an abundant number, since it is smaller than the sum of its proper divisors (2822292229560).

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

1223011213320 is a wasteful number, since it uses less digits than its factorization.

1223011213320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424116 (or 424069 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1223011213320 its reverse (233121103221), we get a palindrome (1456132316541).

The spelling of 1223011213320 in words is "one trillion, two hundred twenty-three billion, eleven million, two hundred thirteen thousand, three hundred twenty".