2112188551 has 16 divisors (see below), whose sum is σ = 2322270720. Its totient is φ = 1905180480.

The previous prime is 2112188543. The next prime is 2112188567. The reversal of 2112188551 is 1558812112.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2112188551 - 2³ = 2112188543 is a prime.

It is a super-2 number, since 2×2112188551² = 8922680949950959202, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2112188591) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 805795 + ... + 808411.

It is an arithmetic number, because the mean of its divisors is an integer number (145141920).

Almost surely, 2^2112188551 is an apocalyptic number.

2112188551 is a deficient number, since it is larger than the sum of its proper divisors (210082169).

2112188551 is a wasteful number, since it uses less digits than its factorization.

2112188551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174.

The product of its digits is 6400, while the sum is 34.

The square root of 2112188551 is about 45958.5525337776. The cubic root of 2112188551 is about 1283.0519116580.

The spelling of 2112188551 in words is "two billion, one hundred twelve million, one hundred eighty-eight thousand, five hundred fifty-one".