1321203241402 has 16 divisors (see below), whose sum is σ = 2198612484000. Its totient is φ = 590368165840.

The previous prime is 1321203241399. The next prime is 1321203241409. The reversal of 1321203241402 is 2041423021231.

It is not an unprimeable number, because it can be changed into a prime (1321203241409) by changing a digit.

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, 508936777 + ... + 508939372.

It is an arithmetic number, because the mean of its divisors is an integer number (137413280250).

Almost surely, 2^{1321203241402} is an apocalyptic number.

1321203241402 is a deficient number, since it is larger than the sum of its proper divisors (877409242598).

1321203241402 is a wasteful number, since it uses less digits than its factorization.

1321203241402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017876221.

The product of its (nonzero) digits is 2304, while the sum is 25.

Adding to 1321203241402 its reverse (2041423021231), we get a palindrome (3362626262633).

The spelling of 1321203241402 in words is "one trillion, three hundred twenty-one billion, two hundred three million, two hundred forty-one thousand, four hundred two".