2221036456 has 16 divisors (see below), whose sum is σ = 4308045300. Its totient is φ = 1072224384.

The previous prime is 2221036409. The next prime is 2221036507. The reversal of 2221036456 is 6546301222.

It can be written as a sum of positive squares in 2 ways, for example, as 1941812356 + 279224100 = 44066^2 + 16710^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4786485 + ... + 4786948.

Almost surely, 2^2221036456 is an apocalyptic number.

It is an amenable number.

2221036456 is a deficient number, since it is larger than the sum of its proper divisors (2087008844).

2221036456 is a wasteful number, since it uses less digits than its factorization.

2221036456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9573468 (or 9573464 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 2221036456 is about 47127.8734508571. The cubic root of 2221036456 is about 1304.7237332032.

Adding to 2221036456 its reverse (6546301222), we get a palindrome (8767337678).

The spelling of 2221036456 in words is "two billion, two hundred twenty-one million, thirty-six thousand, four hundred fifty-six".