1321443021010 has 16 divisors (see below), whose sum is σ = 2718397071936. Its totient is φ = 453066178608.

The previous prime is 1321443020959. The next prime is 1321443021011. The reversal of 1321443021010 is 101203441231.

It is a super-3 number, since 3×1321443021010³ (a number of 37 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1321443021011) 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 7 ways as a sum of consecutive naturals, for example, 9438878652 + ... + 9438878791.

It is an arithmetic number, because the mean of its divisors is an integer number (169899816996).

Almost surely, 2^{1321443021010} is an apocalyptic number.

1321443021010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1321443021010 is an abundant number, since it is smaller than the sum of its proper divisors (1396954050926).

1321443021010 is a wasteful number, since it uses less digits than its factorization.

1321443021010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18877757457.

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

Adding to 1321443021010 its reverse (101203441231), we get a palindrome (1422646462241).

The spelling of 1321443021010 in words is "one trillion, three hundred twenty-one billion, four hundred forty-three million, twenty-one thousand, ten".