1222001056 has 24 divisors (see below), whose sum is σ = 2407107780. Its totient is φ = 610672128.

The previous prime is 1222001041. The next prime is 1222001083. The reversal of 1222001056 is 6501002221.

It can be written as a sum of positive squares in 2 ways, for example, as 1216893456 + 5107600 = 34884^2 + 2260^2 .

It is a super-3 number, since 3×1222001056³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56980 + ... + 75436.

Almost surely, 2^1222001056 is an apocalyptic number.

1222001056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1222001056 is a deficient number, since it is larger than the sum of its proper divisors (1185106724).

1222001056 is a wasteful number, since it uses less digits than its factorization.

1222001056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20536 (or 20528 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 1222001056 is about 34957.1316901144. The cubic root of 1222001056 is about 1069.1136153582.

Adding to 1222001056 its reverse (6501002221), we get a palindrome (7723003277).

It can be divided in two parts, 122200 and 1056, that added together give a triangular number (123256 = T₄₉₆).

The spelling of 1222001056 in words is "one billion, two hundred twenty-two million, one thousand, fifty-six".