1321034223340 has 192 divisors, whose sum is σ = 3172863052800. Its totient is φ = 458332148736.

The previous prime is 1321034223307. The next prime is 1321034223349. The reversal of 1321034223340 is 433224301231.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1321034223299 and 1321034223308.

It is not an unprimeable number, because it can be changed into a prime (1321034223349) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 88837426 + ... + 88852294.

It is an arithmetic number, because the mean of its divisors is an integer number (16525328400).

Almost surely, 2^{1321034223340} is an apocalyptic number.

1321034223340 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 1321034223340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1586431526400).

1321034223340 is an abundant number, since it is smaller than the sum of its proper divisors (1851828829460).

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

1321034223340 is a wasteful number, since it uses less digits than its factorization.

1321034223340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15176 (or 15174 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 28.

Adding to 1321034223340 its reverse (433224301231), we get a palindrome (1754258524571).

The spelling of 1321034223340 in words is "one trillion, three hundred twenty-one billion, thirty-four million, two hundred twenty-three thousand, three hundred forty".