1301221003 has 4 divisors (see below), whose sum is σ = 1320642280. Its totient is φ = 1281799728.

The previous prime is 1301220971. The next prime is 1301221007. The reversal of 1301221003 is 3001221031.

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

It is a cyclic number.

It is not a de Polignac number, because 1301221003 - 2⁵ = 1301220971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1301221007) 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, 9710538 + ... + 9710671.

It is an arithmetic number, because the mean of its divisors is an integer number (330160570).

Almost surely, 2^1301221003 is an apocalyptic number.

1301221003 is a deficient number, since it is larger than the sum of its proper divisors (19421277).

1301221003 is an equidigital number, since it uses as much as digits as its factorization.

1301221003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19421276.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1301221003 is about 36072.4410457623. The cubic root of 1301221003 is about 1091.7344669064.

Adding to 1301221003 its reverse (3001221031), we get a palindrome (4302442034).

The spelling of 1301221003 in words is "one billion, three hundred one million, two hundred twenty-one thousand, three".