2221263506 has 32 divisors (see below), whose sum is σ = 4224476160. Its totient is φ = 850755600.

The previous prime is 2221263467. The next prime is 2221263509. The reversal of 2221263506 is 6053621222.

It is not an unprimeable number, because it can be changed into a prime (2221263509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113150 + ... + 131321.

It is an arithmetic number, because the mean of its divisors is an integer number (132014880).

Almost surely, 2^2221263506 is an apocalyptic number.

2221263506 is a deficient number, since it is larger than the sum of its proper divisors (2003212654).

2221263506 is a wasteful number, since it uses less digits than its factorization.

2221263506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244550.

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 2221263506 is about 47130.2822609838. The cubic root of 2221263506 is about 1304.7681910401.

Adding to 2221263506 its reverse (6053621222), we get a palindrome (8274884728).

The spelling of 2221263506 in words is "two billion, two hundred twenty-one million, two hundred sixty-three thousand, five hundred six".