2112261556 has 6 divisors (see below), whose sum is σ = 3696457730. Its totient is φ = 1056130776.

The previous prime is 2112261517. The next prime is 2112261607. The reversal of 2112261556 is 6551622112.

It can be written as a sum of positive squares in only one way, i.e., 1719429156 + 392832400 = 41466^2 + 19820^2 .

It is a super-2 number, since 2×2112261556² = 8923297761911082272, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264032691 + ... + 264032698.

Almost surely, 2^2112261556 is an apocalyptic number.

It is an amenable number.

2112261556 is a deficient number, since it is larger than the sum of its proper divisors (1584196174).

2112261556 is a wasteful number, since it uses less digits than its factorization.

2112261556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528065393 (or 528065391 counting only the distinct ones).

The product of its digits is 7200, while the sum is 31.

The square root of 2112261556 is about 45959.3467751664. The cubic root of 2112261556 is about 1283.0666938177.

Adding to 2112261556 its reverse (6551622112), we get a palindrome (8663883668).

The spelling of 2112261556 in words is "two billion, one hundred twelve million, two hundred sixty-one thousand, five hundred fifty-six".