2124440440421 has 8 divisors (see below), whose sum is σ = 2408272564320. Its totient is φ = 1857810263472.

The previous prime is 2124440440411. The next prime is 2124440440489. The reversal of 2124440440421 is 1240440444212.

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 2124440440421 - 2¹⁸ = 2124440178277 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 (2124440440411) 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, 4300486475 + ... + 4300486968.

It is an arithmetic number, because the mean of its divisors is an integer number (301034070540).

Almost surely, 2^{2124440440421} is an apocalyptic number.

It is an amenable number.

2124440440421 is a deficient number, since it is larger than the sum of its proper divisors (283832123899).

2124440440421 is a wasteful number, since it uses less digits than its factorization.

2124440440421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8600973475.

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 2124440440421 its reverse (1240440444212), we get a palindrome (3364880884633).

The spelling of 2124440440421 in words is "two trillion, one hundred twenty-four billion, four hundred forty million, four hundred forty thousand, four hundred twenty-one".