2124155555 has 12 divisors (see below), whose sum is σ = 2581698672. Its totient is φ = 1677789360.

The previous prime is 2124155549. The next prime is 2124155563. The reversal of 2124155555 is 5555514212.

It is not a de Polignac number, because 2124155555 - 2¹⁰ = 2124154531 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2831 + ... + 65240.

It is an arithmetic number, because the mean of its divisors is an integer number (215141556).

Almost surely, 2^2124155555 is an apocalyptic number.

2124155555 is a deficient number, since it is larger than the sum of its proper divisors (457543117).

2124155555 is an frugal number, since it uses more digits than its factorization.

2124155555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68234 (or 68155 counting only the distinct ones).

The product of its digits is 50000, while the sum is 35.

The square root of 2124155555 is about 46088.5620843176. The cubic root of 2124155555 is about 1285.4704742654.

Adding to 2124155555 its reverse (5555514212), we get a palindrome (7679669767).

The spelling of 2124155555 in words is "two billion, one hundred twenty-four million, one hundred fifty-five thousand, five hundred fifty-five".