2101149 has 24 divisors (see below), whose sum is σ = 3324672. Its totient is φ = 1272960.

The previous prime is 2101139. The next prime is 2101157. The reversal of 2101149 is 9411012.

It is not a de Polignac number, because 2101149 - 2⁸ = 2100893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2101129) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4522 + ... + 4964.

It is an arithmetic number, because the mean of its divisors is an integer number (138528).

2^2101149 is an apocalyptic number.

It is an amenable number.

2101149 is a deficient number, since it is larger than the sum of its proper divisors (1223523).

2101149 is a wasteful number, since it uses less digits than its factorization.

2101149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 494 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 2101149 is about 1449.5340630699. The cubic root of 2101149 is about 128.0812675652.

The spelling of 2101149 in words is "two million, one hundred one thousand, one hundred forty-nine".