1321010434120 has 64 divisors (see below), whose sum is σ = 3203956808640. Its totient is φ = 487293408000.

The previous prime is 1321010434109. The next prime is 1321010434123. The reversal of 1321010434120 is 214340101231.

It is a junction number, because it is equal to n+sod(n) for n = 1321010434091 and 1321010434100.

It is not an unprimeable number, because it can be changed into a prime (1321010434123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 662046 + ... + 1755085.

It is an arithmetic number, because the mean of its divisors is an integer number (50061825135).

Almost surely, 2^{1321010434120} is an apocalyptic number.

1321010434120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1321010434120 is an abundant number, since it is smaller than the sum of its proper divisors (1882946374520).

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

1321010434120 is a wasteful number, since it uses less digits than its factorization.

1321010434120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2418206 (or 2418202 counting only the distinct ones).

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

Adding to 1321010434120 its reverse (214340101231), we get a palindrome (1535350535351).

The spelling of 1321010434120 in words is "one trillion, three hundred twenty-one billion, ten million, four hundred thirty-four thousand, one hundred twenty".