2054135221 has 16 divisors (see below), whose sum is σ = 2220111360. Its totient is φ = 1894717440.

The previous prime is 2054135207. The next prime is 2054135227. The reversal of 2054135221 is 1225314502.

It is a cyclic number.

It is not a de Polignac number, because 2054135221 - 2¹¹ = 2054133173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2054135227) 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, 767716 + ... + 770386.

It is an arithmetic number, because the mean of its divisors is an integer number (138756960).

Almost surely, 2^2054135221 is an apocalyptic number.

It is an amenable number.

2054135221 is a deficient number, since it is larger than the sum of its proper divisors (165976139).

2054135221 is a wasteful number, since it uses less digits than its factorization.

2054135221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3876.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 2054135221 is about 45322.5685613691. The cubic root of 2054135221 is about 1271.1876836686.

Adding to 2054135221 its reverse (1225314502), we get a palindrome (3279449723).

The spelling of 2054135221 in words is "two billion, fifty-four million, one hundred thirty-five thousand, two hundred twenty-one".