2141232521 has 4 divisors (see below), whose sum is σ = 2141437200. Its totient is φ = 2141027844.

The previous prime is 2141232491. The next prime is 2141232539. The reversal of 2141232521 is 1252321412.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2141232521 - 2¹⁰ = 2141231497 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2141232571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85751 + ... + 107868.

It is an arithmetic number, because the mean of its divisors is an integer number (535359300).

Almost surely, 2^2141232521 is an apocalyptic number.

It is an amenable number.

2141232521 is a deficient number, since it is larger than the sum of its proper divisors (204679).

2141232521 is a wasteful number, since it uses less digits than its factorization.

2141232521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204678.

The product of its digits is 960, while the sum is 23.

The square root of 2141232521 is about 46273.4537396983. The cubic root of 2141232521 is about 1288.9060936536.

Adding to 2141232521 its reverse (1252321412), we get a palindrome (3393553933).

The spelling of 2141232521 in words is "two billion, one hundred forty-one million, two hundred thirty-two thousand, five hundred twenty-one".