4467001221 has 12 divisors (see below), whose sum is σ = 6456159372. Its totient is φ = 2976235776.

The previous prime is 4467001219. The next prime is 4467001229. The reversal of 4467001221 is 1221007644.

It can be written as a sum of positive squares in 2 ways, for example, as 2811650625 + 1655350596 = 53025^2 + 40686^2 .

It is not a de Polignac number, because 4467001221 - 2¹ = 4467001219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4467001229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130966 + ... + 161511.

It is an arithmetic number, because the mean of its divisors is an integer number (538013281).

Almost surely, 2^4467001221 is an apocalyptic number.

It is an amenable number.

4467001221 is a deficient number, since it is larger than the sum of its proper divisors (1989158151).

4467001221 is a wasteful number, since it uses less digits than its factorization.

4467001221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294180 (or 294177 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 4467001221 is about 66835.6283803781. The cubic root of 4467001221 is about 1646.9181802370.

Adding to 4467001221 its reverse (1221007644), we get a palindrome (5688008865).

The spelling of 4467001221 in words is "four billion, four hundred sixty-seven million, one thousand, two hundred twenty-one".