1301231221120 has 64 divisors (see below), whose sum is σ = 3150132667200. Its totient is φ = 513903955968.

The previous prime is 1301231221093. The next prime is 1301231221123. The reversal of 1301231221120 is 211221321031.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301231221123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12817629 + ... + 12918748.

It is an arithmetic number, because the mean of its divisors is an integer number (49220822925).

Almost surely, 2^{1301231221120} is an apocalyptic number.

1301231221120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1301231221120 is an abundant number, since it is smaller than the sum of its proper divisors (1848901446080).

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

1301231221120 is an equidigital number, since it uses as much as digits as its factorization.

1301231221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25736475 (or 25736463 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1301231221120 its reverse (211221321031), we get a palindrome (1512452542151).

The spelling of 1301231221120 in words is "one trillion, three hundred one billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty".