2021151 has 16 divisors (see below), whose sum is σ = 2983680. Its totient is φ = 1206720.

The previous prime is 2021143. The next prime is 2021167. The reversal of 2021151 is 1511202.

It is not a de Polignac number, because 2021151 - 2³ = 2021143 is a prime.

2021151 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2021191) 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, 1990 + ... + 2828.

It is an arithmetic number, because the mean of its divisors is an integer number (186480).

2^2021151 is an apocalyptic number.

2021151 is a deficient number, since it is larger than the sum of its proper divisors (962529).

2021151 is a wasteful number, since it uses less digits than its factorization.

2021151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926.

The product of its (nonzero) digits is 20, while the sum is 12.

The square root of 2021151 is about 1421.6719030775. The cubic root of 2021151 is about 126.4346916140.

Adding to 2021151 its reverse (1511202), we get a palindrome (3532353).

The spelling of 2021151 in words is "two million, twenty-one thousand, one hundred fifty-one".