2101147 has 4 divisors (see below), whose sum is σ = 2104200. Its totient is φ = 2098096.

The previous prime is 2101139. The next prime is 2101157. The reversal of 2101147 is 7411012.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2101147 - 2³ = 2101139 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2101147.

It is not an unprimeable number, because it can be changed into a prime (2101157) 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, 48 + ... + 2050.

It is an arithmetic number, because the mean of its divisors is an integer number (526050).

2^2101147 is an apocalyptic number.

2101147 is a deficient number, since it is larger than the sum of its proper divisors (3053).

2101147 is a wasteful number, since it uses less digits than its factorization.

2101147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3052.

The product of its (nonzero) digits is 56, while the sum is 16.

The square root of 2101147 is about 1449.5333731929. The cubic root of 2101147 is about 128.0812269268.

Adding to 2101147 its reverse (7411012), we get a palindrome (9512159).

The spelling of 2101147 in words is "two million, one hundred one thousand, one hundred forty-seven".