2124132661 has 4 divisors (see below), whose sum is σ = 2427580192. Its totient is φ = 1820685132.

The previous prime is 2124132587. The next prime is 2124132701. The reversal of 2124132661 is 1662314212.

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 2124132661 - 2¹⁷ = 2124001589 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 (2424132661) 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, 151723755 + ... + 151723768.

It is an arithmetic number, because the mean of its divisors is an integer number (606895048).

Almost surely, 2^2124132661 is an apocalyptic number.

It is an amenable number.

2124132661 is a deficient number, since it is larger than the sum of its proper divisors (303447531).

2124132661 is an equidigital number, since it uses as much as digits as its factorization.

2124132661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303447530.

The product of its digits is 3456, while the sum is 28.

The square root of 2124132661 is about 46088.3137139991. The cubic root of 2124132661 is about 1285.4658560119.

Adding to 2124132661 its reverse (1662314212), we get a palindrome (3786446873).

The spelling of 2124132661 in words is "two billion, one hundred twenty-four million, one hundred thirty-two thousand, six hundred sixty-one".