1303212030221 has 4 divisors (see below), whose sum is σ = 1303217080572. Its totient is φ = 1303206979872.

The previous prime is 1303212030209. The next prime is 1303212030233. The reversal of 1303212030221 is 1220302123031.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1303212030209) and next prime (1303212030233).

It can be written as a sum of positive squares in 2 ways, for example, as 24028410121 + 1279183620100 = 155011^2 + 1131010^2 .

It is a cyclic number.

It is not a de Polignac number, because 1303212030221 - 2³⁰ = 1302138288397 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303212030193 and 1303212030202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1303212030251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2116010 + ... + 2661563.

It is an arithmetic number, because the mean of its divisors is an integer number (325804270143).

Almost surely, 2^{1303212030221} is an apocalyptic number.

It is an amenable number.

1303212030221 is a deficient number, since it is larger than the sum of its proper divisors (5050351).

1303212030221 is an equidigital number, since it uses as much as digits as its factorization.

1303212030221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050350.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1303212030221 its reverse (1220302123031), we get a palindrome (2523514153252).

The spelling of 1303212030221 in words is "one trillion, three hundred three billion, two hundred twelve million, thirty thousand, two hundred twenty-one".