1321023241120 has 96 divisors (see below), whose sum is σ = 3414394166400. Its totient is φ = 478995440640.

The previous prime is 1321023241067. The next prime is 1321023241123. The reversal of 1321023241120 is 211423201231.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 1321023241091 and 1321023241100.

It is not an unprimeable number, because it can be changed into a prime (1321023241123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 461092 + ... + 1689571.

It is an arithmetic number, because the mean of its divisors is an integer number (35566605900).

Almost surely, 2^{1321023241120} is an apocalyptic number.

1321023241120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321023241120 is an abundant number, since it is smaller than the sum of its proper divisors (2093370925280).

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

1321023241120 is a wasteful number, since it uses less digits than its factorization.

1321023241120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151038 (or 2151030 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1321023241120 its reverse (211423201231), we get a palindrome (1532446442351).

The spelling of 1321023241120 in words is "one trillion, three hundred twenty-one billion, twenty-three million, two hundred forty-one thousand, one hundred twenty".