2124144400021 has 8 divisors (see below), whose sum is σ = 2427603436544. Its totient is φ = 1820687822640.

The previous prime is 2124144400019. The next prime is 2124144400093. The reversal of 2124144400021 is 1200044414212.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2124144400021 - 2¹ = 2124144400019 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 (2124144460021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1948876 + ... + 2836618.

It is an arithmetic number, because the mean of its divisors is an integer number (303450429568).

Almost surely, 2^{2124144400021} is an apocalyptic number.

It is an amenable number.

2124144400021 is a deficient number, since it is larger than the sum of its proper divisors (303459036523).

2124144400021 is an equidigital number, since it uses as much as digits as its factorization.

2124144400021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1229571.

The product of its (nonzero) digits is 2048, while the sum is 25.

Adding to 2124144400021 its reverse (1200044414212), we get a palindrome (3324188814233).

The spelling of 2124144400021 in words is "two trillion, one hundred twenty-four billion, one hundred forty-four million, four hundred thousand, twenty-one".