1320121434020 has 12 divisors (see below), whose sum is σ = 2772255011484. Its totient is φ = 528048573600.

The previous prime is 1320121434019. The next prime is 1320121434029. The reversal of 1320121434020 is 204341210231.

It can be written as a sum of positive squares in 2 ways, for example, as 150747380644 + 1169374053376 = 388262^2 + 1081376^2 .

It is not an unprimeable number, because it can be changed into a prime (1320121434029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33003035831 + ... + 33003035870.

It is an arithmetic number, because the mean of its divisors is an integer number (231021250957).

Almost surely, 2^{1320121434020} is an apocalyptic number.

1320121434020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1320121434020 is an abundant number, since it is smaller than the sum of its proper divisors (1452133577464).

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

1320121434020 is a wasteful number, since it uses less digits than its factorization.

1320121434020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66006071710 (or 66006071708 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 1320121434020 its reverse (204341210231), we get a palindrome (1524462644251).

The spelling of 1320121434020 in words is "one trillion, three hundred twenty billion, one hundred twenty-one million, four hundred thirty-four thousand, twenty".