4015066221 has 6 divisors (see below), whose sum is σ = 5799540110. Its totient is φ = 2676710808.

The previous prime is 4015066207. The next prime is 4015066229. The reversal of 4015066221 is 1226605104.

It can be written as a sum of positive squares in only one way, i.e., 2207966121 + 1807100100 = 46989^2 + 42510^2 .

It is not a de Polignac number, because 4015066221 - 2⁹ = 4015065709 is a prime.

It is a super-2 number, since 2×4015066221² = 32241513518030441682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4015066229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223059226 + ... + 223059243.

Almost surely, 2^4015066221 is an apocalyptic number.

It is an amenable number.

4015066221 is a deficient number, since it is larger than the sum of its proper divisors (1784473889).

4015066221 is a wasteful number, since it uses less digits than its factorization.

4015066221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446118475 (or 446118472 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 4015066221 is about 63364.5501917279. The cubic root of 4015066221 is about 1589.3915661842.

The spelling of 4015066221 in words is "four billion, fifteen million, sixty-six thousand, two hundred twenty-one".