1321032012303 has 16 divisors (see below), whose sum is σ = 1826075414016. Its totient is φ = 848855904960.

The previous prime is 1321032012239. The next prime is 1321032012343. The reversal of 1321032012303 is 3032102301231.

It is not a de Polignac number, because 1321032012303 - 2⁶ = 1321032012239 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1321032012303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1321032012343) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64689175 + ... + 64709592.

It is an arithmetic number, because the mean of its divisors is an integer number (114129713376).

Almost surely, 2^{1321032012303} is an apocalyptic number.

1321032012303 is a deficient number, since it is larger than the sum of its proper divisors (505043401713).

1321032012303 is a wasteful number, since it uses less digits than its factorization.

1321032012303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129398894.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 1321032012303 its reverse (3032102301231), we get a palindrome (4353134313534).

The spelling of 1321032012303 in words is "one trillion, three hundred twenty-one billion, thirty-two million, twelve thousand, three hundred three".