1321202003111 has 2 divisors, whose sum is σ = 1321202003112. Its totient is φ = 1321202003110.

The previous prime is 1321202003101. The next prime is 1321202003117. The reversal of 1321202003111 is 1113002021231.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1321202003111 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321202003111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1321202003117) 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 as a sum of consecutive naturals, namely, 660601001555 + 660601001556.

It is an arithmetic number, because the mean of its divisors is an integer number (660601001556).

Almost surely, 2^{1321202003111} is an apocalyptic number.

1321202003111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1321202003111 is an equidigital number, since it uses as much as digits as its factorization.

1321202003111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1321202003111 its reverse (1113002021231), we get a palindrome (2434204024342).

The spelling of 1321202003111 in words is "one trillion, three hundred twenty-one billion, two hundred two million, three thousand, one hundred eleven".