224544222445421 has 16 divisors (see below), whose sum is σ = 227718473917440. Its totient is φ = 221372645880960.

The previous prime is 224544222445399. The next prime is 224544222445429. The reversal of 224544222445421 is 124544222445422.

It is a cyclic number.

It is not a de Polignac number, because 224544222445421 - 2⁴² = 220146175934317 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 (224544222445429) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1969093676 + ... + 1969207706.

It is an arithmetic number, because the mean of its divisors is an integer number (14232404619840).

Almost surely, 2^{224544222445421} is an apocalyptic number.

It is an amenable number.

224544222445421 is a deficient number, since it is larger than the sum of its proper divisors (3174251472019).

224544222445421 is a wasteful number, since it uses less digits than its factorization.

224544222445421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125516.

The product of its digits is 6553600, while the sum is 47.

Subtracting from 224544222445421 its reverse (124544222445422), we obtain a palindrome (99999999999999).

The spelling of 224544222445421 in words is "two hundred twenty-four trillion, five hundred forty-four billion, two hundred twenty-two million, four hundred forty-five thousand, four hundred twenty-one".