21445301114421 has 16 divisors (see below), whose sum is σ = 28714811791680. Its totient is φ = 14236357328000.

The previous prime is 21445301114353. The next prime is 21445301114431. The reversal of 21445301114421 is 12441110354412.

It is a cyclic number.

It is not a de Polignac number, because 21445301114421 - 2¹¹ = 21445301112373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21445301114431) 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, 526656 + ... + 6570233.

It is an arithmetic number, because the mean of its divisors is an integer number (1794675736980).

Almost surely, 2^{21445301114421} is an apocalyptic number.

It is an amenable number.

21445301114421 is a deficient number, since it is larger than the sum of its proper divisors (7269510677259).

21445301114421 is a wasteful number, since it uses less digits than its factorization.

21445301114421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101156.

The product of its (nonzero) digits is 15360, while the sum is 33.

Adding to 21445301114421 its reverse (12441110354412), we get a palindrome (33886411468833).

The spelling of 21445301114421 in words is "twenty-one trillion, four hundred forty-five billion, three hundred one million, one hundred fourteen thousand, four hundred twenty-one".