1320121300312 has 32 divisors (see below), whose sum is σ = 2663793479520. Its totient is φ = 611049392640.

The previous prime is 1320121300301. The next prime is 1320121300313. The reversal of 1320121300312 is 2130031210231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320121300312.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320121300313) 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, 79555428 + ... + 79572019.

It is an arithmetic number, because the mean of its divisors is an integer number (83243546235).

Almost surely, 2^{1320121300312} is an apocalyptic number.

It is an amenable number.

1320121300312 is an abundant number, since it is smaller than the sum of its proper divisors (1343672179208).

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

1320121300312 is a wasteful number, since it uses less digits than its factorization.

1320121300312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159127531 (or 159127527 counting only the distinct ones).

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

Adding to 1320121300312 its reverse (2130031210231), we get a palindrome (3450152510543).

The spelling of 1320121300312 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, three hundred thousand, three hundred twelve".