2221233444 has 36 divisors (see below), whose sum is σ = 5616426816. Its totient is φ = 740194608.

The previous prime is 2221233439. The next prime is 2221233461. The reversal of 2221233444 is 4443321222.

2221233444 is a `hidden beast` number, since 2 + 2 + 212 + 3 + 3 + 444 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2221233444² = 9867756025488202272, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 158257 + ... + 171719.

It is an arithmetic number, because the mean of its divisors is an integer number (156011856).

Almost surely, 2^2221233444 is an apocalyptic number.

It is an amenable number.

2221233444 is an abundant number, since it is smaller than the sum of its proper divisors (3395193372).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221233444 is a wasteful number, since it uses less digits than its factorization.

2221233444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056 (or 18051 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 2221233444 is about 47129.9633354409. The cubic root of 2221233444 is about 1304.7623048830.

Adding to 2221233444 its reverse (4443321222), we get a palindrome (6664554666).

The spelling of 2221233444 in words is "two billion, two hundred twenty-one million, two hundred thirty-three thousand, four hundred forty-four".