1300002221 has 4 divisors (see below), whose sum is σ = 1485716832. Its totient is φ = 1114287612.

The previous prime is 1300002199. The next prime is 1300002229. The reversal of 1300002221 is 1222000031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1300002221 - 2²² = 1295807917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1300002229) 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 3 ways as a sum of consecutive naturals, for example, 92857295 + ... + 92857308.

It is an arithmetic number, because the mean of its divisors is an integer number (371429208).

Almost surely, 2^1300002221 is an apocalyptic number.

It is an amenable number.

1300002221 is a deficient number, since it is larger than the sum of its proper divisors (185714611).

1300002221 is an equidigital number, since it uses as much as digits as its factorization.

1300002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185714610.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 1300002221 is about 36055.5435543551. The cubic root of 1300002221 is about 1091.3935045950.

Adding to 1300002221 its reverse (1222000031), we get a palindrome (2522002252).

The spelling of 1300002221 in words is "one billion, three hundred million, two thousand, two hundred twenty-one".