2124214021 has 4 divisors (see below), whose sum is σ = 2169410112. Its totient is φ = 2079017932.

The previous prime is 2124214007. The next prime is 2124214033. The reversal of 2124214021 is 1204124212.

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 2124214021 - 2⁵ = 2124213989 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2124214021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2124214051) 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, 22597975 + ... + 22598068.

It is an arithmetic number, because the mean of its divisors is an integer number (542352528).

Almost surely, 2^2124214021 is an apocalyptic number.

It is an amenable number.

2124214021 is a deficient number, since it is larger than the sum of its proper divisors (45196091).

2124214021 is an equidigital number, since it uses as much as digits as its factorization.

2124214021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45196090.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 2124214021 is about 46089.1963587997. The cubic root of 2124214021 is about 1285.4822680701.

Adding to 2124214021 its reverse (1204124212), we get a palindrome (3328338233).

The spelling of 2124214021 in words is "two billion, one hundred twenty-four million, two hundred fourteen thousand, twenty-one".