2556221122 has 48 divisors (see below), whose sum is σ = 4825154880. Its totient is φ = 1006683552.

The previous prime is 2556221093. The next prime is 2556221131. The reversal of 2556221122 is 2211226552.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 284779 + ... + 293617.

It is an arithmetic number, because the mean of its divisors is an integer number (100524060).

Almost surely, 2^2556221122 is an apocalyptic number.

2556221122 is a deficient number, since it is larger than the sum of its proper divisors (2268933758).

2556221122 is a wasteful number, since it uses less digits than its factorization.

2556221122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9095 (or 9088 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 2556221122 is about 50559.0854545452. The cubic root of 2556221122 is about 1367.3073226993.

Adding to 2556221122 its reverse (2211226552), we get a palindrome (4767447674).

The spelling of 2556221122 in words is "two billion, five hundred fifty-six million, two hundred twenty-one thousand, one hundred twenty-two".