4000220281 has 8 divisors (see below), whose sum is σ = 4010852160. Its totient is φ = 3989602032.

The previous prime is 4000220267. The next prime is 4000220293. The reversal of 4000220281 is 1820220004.

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 4000220281 - 2⁷ = 4000220153 is a prime.

It is a super-2 number, since 2×4000220281² = 32003524593047437922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000220251) 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, 838180 + ... + 842938.

It is an arithmetic number, because the mean of its divisors is an integer number (501356520).

Almost surely, 2^4000220281 is an apocalyptic number.

It is an amenable number.

4000220281 is a deficient number, since it is larger than the sum of its proper divisors (10631879).

4000220281 is a wasteful number, since it uses less digits than its factorization.

4000220281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 4000220281 is about 63247.2946536055. The cubic root of 4000220281 is about 1587.4301909576.

Adding to 4000220281 its reverse (1820220004), we get a palindrome (5820440285).

The spelling of 4000220281 in words is "four billion, two hundred twenty thousand, two hundred eighty-one".