4405121224021 has 8 divisors (see below), whose sum is σ = 5095079970624. Its totient is φ = 3730326406080.

The previous prime is 4405121224003. The next prime is 4405121224033. The reversal of 4405121224021 is 1204221215044.

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 4405121224021 - 2²³ = 4405112835413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405121224081) 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, 3790981540 + ... + 3790982701.

It is an arithmetic number, because the mean of its divisors is an integer number (636884996328).

Almost surely, 2^{4405121224021} is an apocalyptic number.

It is an amenable number.

4405121224021 is a deficient number, since it is larger than the sum of its proper divisors (689958746603).

4405121224021 is an equidigital number, since it uses as much as digits as its factorization.

4405121224021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7581964331.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 4405121224021 its reverse (1204221215044), we get a palindrome (5609342439065).

The spelling of 4405121224021 in words is "four trillion, four hundred five billion, one hundred twenty-one million, two hundred twenty-four thousand, twenty-one".