1303212103221 has 32 divisors (see below), whose sum is σ = 1990500917248. Its totient is φ = 742949444160.

The previous prime is 1303212103201. The next prime is 1303212103241. The reversal of 1303212103221 is 1223012123031.

It is an interprime number because it is at equal distance from previous prime (1303212103201) and next prime (1303212103241).

It is not a de Polignac number, because 1303212103221 - 2⁷ = 1303212103093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303212103201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15712566 + ... + 15795288.

It is an arithmetic number, because the mean of its divisors is an integer number (62203153664).

Almost surely, 2^{1303212103221} is an apocalyptic number.

It is an amenable number.

1303212103221 is a deficient number, since it is larger than the sum of its proper divisors (687288814027).

1303212103221 is an equidigital number, since it uses as much as digits as its factorization.

1303212103221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84481.

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1303212103221 its reverse (1223012123031), we get a palindrome (2526224226252).

The spelling of 1303212103221 in words is "one trillion, three hundred three billion, two hundred twelve million, one hundred three thousand, two hundred twenty-one".