1321213421002 has 16 divisors (see below), whose sum is σ = 2004295104000. Its totient is φ = 653116588960.

The previous prime is 1321213420981. The next prime is 1321213421053. The reversal of 1321213421002 is 2001243121231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363749 + ... + 2121847.

It is an arithmetic number, because the mean of its divisors is an integer number (125268444000).

Almost surely, 2^{1321213421002} is an apocalyptic number.

1321213421002 is a deficient number, since it is larger than the sum of its proper divisors (683081682998).

1321213421002 is an equidigital number, since it uses as much as digits as its factorization.

1321213421002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767981.

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

Adding to 1321213421002 its reverse (2001243121231), we get a palindrome (3322456542233).

The spelling of 1321213421002 in words is "one trillion, three hundred twenty-one billion, two hundred thirteen million, four hundred twenty-one thousand, two".