2443404121021 has 8 divisors (see below), whose sum is σ = 2489760690560. Its totient is φ = 2397482824752.

The previous prime is 2443404121013. The next prime is 2443404121057. The reversal of 2443404121021 is 1201214043442.

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 2443404121021 - 2³ = 2443404121013 is a prime.

It is a super-2 number, since 2×2443404121021² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2443404121001) 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, 108806985 + ... + 108829438.

It is an arithmetic number, because the mean of its divisors is an integer number (311220086320).

Almost surely, 2^{2443404121021} is an apocalyptic number.

It is an amenable number.

2443404121021 is a deficient number, since it is larger than the sum of its proper divisors (46356569539).

2443404121021 is a wasteful number, since it uses less digits than its factorization.

2443404121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217636635.

The product of its (nonzero) digits is 6144, while the sum is 28.

Adding to 2443404121021 its reverse (1201214043442), we get a palindrome (3644618164463).

The spelling of 2443404121021 in words is "two trillion, four hundred forty-three billion, four hundred four million, one hundred twenty-one thousand, twenty-one".