22021444304421 has 16 divisors (see below), whose sum is σ = 29860911385920. Its totient is φ = 14431492144640.

The previous prime is 22021444304411. The next prime is 22021444304443. The reversal of 22021444304421 is 12440344412022.

It is a cyclic number.

It is not a de Polignac number, because 22021444304421 - 2¹⁵ = 22021444271653 is a prime.

It is a super-2 number, since 2×22021444304421² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021444304401) 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, 1251541 + ... + 6753461.

It is an arithmetic number, because the mean of its divisors is an integer number (1866306961620).

Almost surely, 2^{22021444304421} is an apocalyptic number.

It is an amenable number.

22021444304421 is a deficient number, since it is larger than the sum of its proper divisors (7839467081499).

22021444304421 is a wasteful number, since it uses less digits than its factorization.

22021444304421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524596.

The product of its (nonzero) digits is 49152, while the sum is 33.

Adding to 22021444304421 its reverse (12440344412022), we get a palindrome (34461788716443).

The spelling of 22021444304421 in words is "twenty-two trillion, twenty-one billion, four hundred forty-four million, three hundred four thousand, four hundred twenty-one".