1301200221 has 4 divisors (see below), whose sum is σ = 1734933632. Its totient is φ = 867466812.

The previous prime is 1301200207. The next prime is 1301200223. The reversal of 1301200221 is 1220021031.

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 not a de Polignac number, because 1301200221 - 2⁵ = 1301200189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1301200197 and 1301200206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1301200223) 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, 216866701 + ... + 216866706.

It is an arithmetic number, because the mean of its divisors is an integer number (433733408).

Almost surely, 2^1301200221 is an apocalyptic number.

It is an amenable number.

1301200221 is a deficient number, since it is larger than the sum of its proper divisors (433733411).

1301200221 is an equidigital number, since it uses as much as digits as its factorization.

1301200221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 433733410.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1301200221 is about 36072.1529853709. The cubic root of 1301200221 is about 1091.7286547893.

Adding to 1301200221 its reverse (1220021031), we get a palindrome (2521221252).

The spelling of 1301200221 in words is "one billion, three hundred one million, two hundred thousand, two hundred twenty-one".