2201138 has 4 divisors (see below), whose sum is σ = 3301710. Its totient is φ = 1100568.

The previous prime is 2201137. The next prime is 2201149. The reversal of 2201138 is 8311022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8311022 = 2 ⋅4155511.

It can be written as a sum of positive squares in only one way, i.e., 2199289 + 1849 = 1483^2 + 43^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2201137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550283 + ... + 550286.

2^2201138 is an apocalyptic number.

2201138 is a deficient number, since it is larger than the sum of its proper divisors (1100572).

2201138 is a wasteful number, since it uses less digits than its factorization.

2201138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100571.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 2201138 is about 1483.6232675447. The cubic root of 2201138 is about 130.0815661691.

The spelling of 2201138 in words is "two million, two hundred one thousand, one hundred thirty-eight".