2220533281 has 8 divisors (see below), whose sum is σ = 2300733864. Its totient is φ = 2141395200.

The previous prime is 2220533269. The next prime is 2220533291. The reversal of 2220533281 is 1823350222.

It can be written as a sum of positive squares in 4 ways, for example, as 677300625 + 1543232656 = 26025^2 + 39284^2 .

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

It is not a de Polignac number, because 2220533281 - 2⁷ = 2220533153 is a prime.

It is a super-2 number, since 2×2220533281² = 9861536104057249922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2220533221) 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, 261370 + ... + 269731.

It is an arithmetic number, because the mean of its divisors is an integer number (287591733).

Almost surely, 2^2220533281 is an apocalyptic number.

It is an amenable number.

2220533281 is a deficient number, since it is larger than the sum of its proper divisors (80200583).

2220533281 is a wasteful number, since it uses less digits than its factorization.

2220533281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531251.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 2220533281 is about 47122.5347471886. The cubic root of 2220533281 is about 1304.6251975329.

The spelling of 2220533281 in words is "two billion, two hundred twenty million, five hundred thirty-three thousand, two hundred eighty-one".