2132240021 has 4 divisors (see below), whose sum is σ = 2244463200. Its totient is φ = 2020016844.

The previous prime is 2132240009. The next prime is 2132240081. The reversal of 2132240021 is 1200422312.

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 not a de Polignac number, because 2132240021 - 2³⁰ = 1058498197 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2132240081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56111561 + ... + 56111598.

It is an arithmetic number, because the mean of its divisors is an integer number (561115800).

Almost surely, 2^2132240021 is an apocalyptic number.

It is an amenable number.

2132240021 is a deficient number, since it is larger than the sum of its proper divisors (112223179).

2132240021 is a wasteful number, since it uses less digits than its factorization.

2132240021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112223178.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2132240021 is about 46176.1845652063. The cubic root of 2132240021 is about 1287.0992290933.

Adding to 2132240021 its reverse (1200422312), we get a palindrome (3332662333).

The spelling of 2132240021 in words is "two billion, one hundred thirty-two million, two hundred forty thousand, twenty-one".