1313121212120 has 64 divisors (see below), whose sum is σ = 2988309218400. Its totient is φ = 519257804800.

The previous prime is 1313121212119. The next prime is 1313121212173. The reversal of 1313121212120 is 212121213131.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 1313121212092 and 1313121212101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2415752 + ... + 2908968.

Almost surely, 2^{1313121212120} is an apocalyptic number.

1313121212120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1313121212120 is an abundant number, since it is smaller than the sum of its proper divisors (1675188006280).

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

1313121212120 is a wasteful number, since it uses less digits than its factorization.

1313121212120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493988 (or 493984 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1313121212120 its reverse (212121213131), we get a palindrome (1525242425251).

The spelling of 1313121212120 in words is "one trillion, three hundred thirteen billion, one hundred twenty-one million, two hundred twelve thousand, one hundred twenty".