1301302221 has 32 divisors (see below), whose sum is σ = 1818464256. Its totient is φ = 826800000.

The previous prime is 1301302217. The next prime is 1301302231. The reversal of 1301302221 is 1222031031.

It is not a de Polignac number, because 1301302221 - 2² = 1301302217 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1301302221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301302201) 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, 2497441 + ... + 2497961.

It is an arithmetic number, because the mean of its divisors is an integer number (56827008).

Almost surely, 2^1301302221 is an apocalyptic number.

It is an amenable number.

1301302221 is a deficient number, since it is larger than the sum of its proper divisors (517162035).

1301302221 is a wasteful number, since it uses less digits than its factorization.

1301302221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 1301302221 is about 36073.5667906571. The cubic root of 1301302221 is about 1091.7571806101.

Adding to 1301302221 its reverse (1222031031), we get a palindrome (2523333252).

The spelling of 1301302221 in words is "one billion, three hundred one million, three hundred two thousand, two hundred twenty-one".