2112155155 has 16 divisors (see below), whose sum is σ = 2778912000. Its totient is φ = 1528385760.

The previous prime is 2112155153. The next prime is 2112155189. The reversal of 2112155155 is 5515512112.

It is not a de Polignac number, because 2112155155 - 2¹ = 2112155153 is a prime.

It is a super-2 number, since 2×2112155155² = 8922398797586148050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2112155153) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 85545 + ... + 107434.

It is an arithmetic number, because the mean of its divisors is an integer number (173682000).

Almost surely, 2^2112155155 is an apocalyptic number.

2112155155 is a deficient number, since it is larger than the sum of its proper divisors (666756845).

2112155155 is a wasteful number, since it uses less digits than its factorization.

2112155155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193194.

The product of its digits is 2500, while the sum is 28.

The square root of 2112155155 is about 45958.1892049719. The cubic root of 2112155155 is about 1283.0451494733.

Adding to 2112155155 its reverse (5515512112), we get a palindrome (7627667267).

The spelling of 2112155155 in words is "two billion, one hundred twelve million, one hundred fifty-five thousand, one hundred fifty-five".