2124355556 has 12 divisors (see below), whose sum is σ = 3721986492. Its totient is φ = 1060930848.

The previous prime is 2124355549. The next prime is 2124355577. The reversal of 2124355556 is 6555534212.

It can be written as a sum of positive squares in 2 ways, for example, as 425596900 + 1698758656 = 20630^2 + 41216^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307895 + ... + 314718.

It is an arithmetic number, because the mean of its divisors is an integer number (310165541).

Almost surely, 2^2124355556 is an apocalyptic number.

It is an amenable number.

2124355556 is a deficient number, since it is larger than the sum of its proper divisors (1597630936).

2124355556 is a wasteful number, since it uses less digits than its factorization.

2124355556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623470 (or 623468 counting only the distinct ones).

The product of its digits is 180000, while the sum is 38.

The square root of 2124355556 is about 46090.7317798275. The cubic root of 2124355556 is about 1285.5108177188.

Adding to 2124355556 its reverse (6555534212), we get a palindrome (8679889768).

The spelling of 2124355556 in words is "two billion, one hundred twenty-four million, three hundred fifty-five thousand, five hundred fifty-six".