22213513444421 has 16 divisors (see below), whose sum is σ = 24015928918464. Its totient is φ = 20424485351424.

The previous prime is 22213513444403. The next prime is 22213513444453. The reversal of 22213513444421 is 12444431531222.

It is a cyclic number.

It is not a de Polignac number, because 22213513444421 - 2¹⁴ = 22213513428037 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 (22213513444321) 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, 222738050 + ... + 222837756.

It is an arithmetic number, because the mean of its divisors is an integer number (1500995557404).

Almost surely, 2^{22213513444421} is an apocalyptic number.

It is an amenable number.

22213513444421 is a deficient number, since it is larger than the sum of its proper divisors (1802415474043).

22213513444421 is a wasteful number, since it uses less digits than its factorization.

22213513444421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166660.

The product of its digits is 184320, while the sum is 38.

Adding to 22213513444421 its reverse (12444431531222), we get a palindrome (34657944975643).

The spelling of 22213513444421 in words is "twenty-two trillion, two hundred thirteen billion, five hundred thirteen million, four hundred forty-four thousand, four hundred twenty-one".