2201918128 has 20 divisors (see below), whose sum is σ = 4272539040. Its totient is φ = 1099327424.

The previous prime is 2201918123. The next prime is 2201918143. The reversal of 2201918128 is 8218191022.

It is a junction number, because it is equal to n+sod(n) for n = 2201918093 and 2201918102.

It is not an unprimeable number, because it can be changed into a prime (2201918123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90808 + ... + 112471.

It is an arithmetic number, because the mean of its divisors is an integer number (213626952).

Almost surely, 2^2201918128 is an apocalyptic number.

It is an amenable number.

2201918128 is a deficient number, since it is larger than the sum of its proper divisors (2070620912).

2201918128 is a wasteful number, since it uses less digits than its factorization.

2201918128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203964 (or 203958 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 34.

The square root of 2201918128 is about 46924.6004564770. The cubic root of 2201918128 is about 1300.9693220329.

The spelling of 2201918128 in words is "two billion, two hundred one million, nine hundred eighteen thousand, one hundred twenty-eight".