2221080772 has 24 divisors (see below), whose sum is σ = 4147522400. Its totient is φ = 1037676096.

The previous prime is 2221080769. The next prime is 2221080779. The reversal of 2221080772 is 2770801222.

It is not an unprimeable number, because it can be changed into a prime (2221080779) 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, 194622 + ... + 205717.

Almost surely, 2^2221080772 is an apocalyptic number.

It is an amenable number.

2221080772 is a deficient number, since it is larger than the sum of its proper divisors (1926441628).

2221080772 is a wasteful number, since it uses less digits than its factorization.

2221080772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400435 (or 400433 counting only the distinct ones).

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 2221080772 is about 47128.3436161298. The cubic root of 2221080772 is about 1304.7324107964.

Adding to 2221080772 its reverse (2770801222), we get a palindrome (4991881994).

The spelling of 2221080772 in words is "two billion, two hundred twenty-one million, eighty thousand, seven hundred seventy-two".