2051121 has 8 divisors (see below), whose sum is σ = 2742880. Its totient is φ = 1363392.

The previous prime is 2051113. The next prime is 2051123. The reversal of 2051121 is 1211502.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2051121 - 2³ = 2051113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2051097 and 2051106.

It is not an unprimeable number, because it can be changed into a prime (2051123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 510 + ... + 2088.

It is an arithmetic number, because the mean of its divisors is an integer number (342860).

2^2051121 is an apocalyptic number.

It is an amenable number.

2051121 is a deficient number, since it is larger than the sum of its proper divisors (691759).

2051121 is a wasteful number, since it uses less digits than its factorization.

2051121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015.

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

The square root of 2051121 is about 1432.1735230062. The cubic root of 2051121 is about 127.0565602533.

Adding to 2051121 its reverse (1211502), we get a palindrome (3262623).

It can be divided in two parts, 205 and 1121, that added together give a triangular number (1326 = T₅₁).

The spelling of 2051121 in words is "two million, fifty-one thousand, one hundred twenty-one".