1303212331221 has 16 divisors (see below), whose sum is σ = 1799031092160. Its totient is φ = 838150790400.

The previous prime is 1303212331219. The next prime is 1303212331241. The reversal of 1303212331221 is 1221332123031.

It is not a de Polignac number, because 1303212331221 - 2¹ = 1303212331219 is a prime.

It is a super-2 number, since 2×1303212331221² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1303212331191 and 1303212331200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303212331241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6131755 + ... + 6340728.

It is an arithmetic number, because the mean of its divisors is an integer number (112439443260).

Almost surely, 2^{1303212331221} is an apocalyptic number.

It is an amenable number.

1303212331221 is a deficient number, since it is larger than the sum of its proper divisors (495818760939).

1303212331221 is a wasteful number, since it uses less digits than its factorization.

1303212331221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12473716.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 1303212331221 its reverse (1221332123031), we get a palindrome (2524544454252).

The spelling of 1303212331221 in words is "one trillion, three hundred three billion, two hundred twelve million, three hundred thirty-one thousand, two hundred twenty-one".