1301001221 has 8 divisors (see below), whose sum is σ = 1401902040. Its totient is φ = 1200218112.

The previous prime is 1301001209. The next prime is 1301001257. The reversal of 1301001221 is 1221001031.

It can be written as a sum of positive squares in 4 ways, for example, as 29008996 + 1271992225 = 5386^2 + 35665^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1301001221 - 2¹⁴ = 1300984837 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 (1301009221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5756 + ... + 51333.

It is an arithmetic number, because the mean of its divisors is an integer number (175237755).

Almost surely, 2^1301001221 is an apocalyptic number.

It is an amenable number.

1301001221 is a deficient number, since it is larger than the sum of its proper divisors (100900819).

1301001221 is a wasteful number, since it uses less digits than its factorization.

1301001221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58855.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1301001221 is about 36069.3945194537. The cubic root of 1301001221 is about 1091.6729971805.

Adding to 1301001221 its reverse (1221001031), we get a palindrome (2522002252).

The spelling of 1301001221 in words is "one billion, three hundred one million, one thousand, two hundred twenty-one".