1303011111221 has 8 divisors (see below), whose sum is σ = 1363468986624. Its totient is φ = 1243704814560.

The previous prime is 1303011111167. The next prime is 1303011111289. The reversal of 1303011111221 is 1221111103031.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1303011111221 is a prime.

It is a super-2 number, since 2×1303011111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1303011111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303011141221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 287892371 + ... + 287896896.

It is an arithmetic number, because the mean of its divisors is an integer number (170433623328).

Almost surely, 2^{1303011111221} is an apocalyptic number.

It is an amenable number.

1303011111221 is a deficient number, since it is larger than the sum of its proper divisors (60457875403).

1303011111221 is an equidigital number, since it uses as much as digits as its factorization.

1303011111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 575789371.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 1303011111221 its reverse (1221111103031), we get a palindrome (2524122214252).

The spelling of 1303011111221 in words is "one trillion, three hundred three billion, eleven million, one hundred eleven thousand, two hundred twenty-one".