1213120323120 has 320 divisors, whose sum is σ = 4000655370240. Its totient is φ = 303509606400.

The previous prime is 1213120323089. The next prime is 1213120323139. The reversal of 1213120323120 is 213230213121.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 234598135 + ... + 234603305.

It is an arithmetic number, because the mean of its divisors is an integer number (12502048032).

Almost surely, 2^{1213120323120} is an apocalyptic number.

1213120323120 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 1213120323120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2000327685120).

1213120323120 is an abundant number, since it is smaller than the sum of its proper divisors (2787535047120).

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

1213120323120 is a wasteful number, since it uses less digits than its factorization.

1213120323120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6164 (or 6158 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1213120323120 its reverse (213230213121), we get a palindrome (1426350536241).

The spelling of 1213120323120 in words is "one trillion, two hundred thirteen billion, one hundred twenty million, three hundred twenty-three thousand, one hundred twenty".