2221624044 has 24 divisors (see below), whose sum is σ = 5759766320. Its totient is φ = 740541312.

The previous prime is 2221624019. The next prime is 2221624051. The reversal of 2221624044 is 4404261222.

It is a super-2 number, since 2×2221624044² = 9871226785757827872, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2221623999 and 2221624017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10285189 + ... + 10285404.

Almost surely, 2^2221624044 is an apocalyptic number.

It is an amenable number.

2221624044 is an abundant number, since it is smaller than the sum of its proper divisors (3538142276).

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

2221624044 is a wasteful number, since it uses less digits than its factorization.

2221624044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20570606 (or 20570598 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 2221624044 is about 47134.1070139236. The cubic root of 2221624044 is about 1304.8387804537.

Adding to 2221624044 its reverse (4404261222), we get a palindrome (6625885266).

The spelling of 2221624044 in words is "two billion, two hundred twenty-one million, six hundred twenty-four thousand, forty-four".