2112155560 has 32 divisors (see below), whose sum is σ = 4853468160. Its totient is φ = 826885696.

The previous prime is 2112155557. The next prime is 2112155593. The reversal of 2112155560 is 655512112.

It is a super-2 number, since 2×2112155560² = 8922402219277827200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559864 + ... + 563623.

It is an arithmetic number, because the mean of its divisors is an integer number (151670880).

Almost surely, 2^2112155560 is an apocalyptic number.

2112155560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2112155560 is an abundant number, since it is smaller than the sum of its proper divisors (2741312600).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2112155560 is a wasteful number, since it uses less digits than its factorization.

2112155560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1123545 (or 1123541 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 2112155560 is about 45958.1936111506. The cubic root of 2112155560 is about 1283.0452314800.

Adding to 2112155560 its reverse (655512112), we get a palindrome (2767667672).

The spelling of 2112155560 in words is "two billion, one hundred twelve million, one hundred fifty-five thousand, five hundred sixty".