1313321120020 has 96 divisors (see below), whose sum is σ = 3503927863296. Its totient is φ = 402236582400.

The previous prime is 1313321119967. The next prime is 1313321120057. The reversal of 1313321120020 is 200211233131.

It is a self number, because there is not a number n which added to its sum of digits gives 1313321120020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11582371 + ... + 11695210.

It is an arithmetic number, because the mean of its divisors is an integer number (36499248576).

Almost surely, 2^{1313321120020} is an apocalyptic number.

1313321120020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313321120020 is an abundant number, since it is smaller than the sum of its proper divisors (2190606743276).

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

1313321120020 is a wasteful number, since it uses less digits than its factorization.

1313321120020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23277641 (or 23277639 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1313321120020 its reverse (200211233131), we get a palindrome (1513532353151).

It can be divided in two parts, 1313321 and 120020, that added together give a palindrome (1433341).

The spelling of 1313321120020 in words is "one trillion, three hundred thirteen billion, three hundred twenty-one million, one hundred twenty thousand, twenty".