1320231421300 has 72 divisors (see below), whose sum is σ = 3127877615520. Its totient is φ = 479695555200.

The previous prime is 1320231421283. The next prime is 1320231421303. The reversal of 1320231421300 is 31241320231.

It is a super-2 number, since 2×1320231421300² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320231421303) 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, 875571 + ... + 1845829.

It is an arithmetic number, because the mean of its divisors is an integer number (43442744660).

Almost surely, 2^{1320231421300} is an apocalyptic number.

1320231421300 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 1320231421300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1563938807760).

1320231421300 is an abundant number, since it is smaller than the sum of its proper divisors (1807646194220).

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

1320231421300 is a wasteful number, since it uses less digits than its factorization.

1320231421300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971521 (or 971514 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 1320231421300 its reverse (31241320231), we get a palindrome (1351472741531).

The spelling of 1320231421300 in words is "one trillion, three hundred twenty billion, two hundred thirty-one million, four hundred twenty-one thousand, three hundred".