22424222023421 has 16 divisors (see below), whose sum is σ = 24021041966400. Its totient is φ = 20869557527808.

The previous prime is 22424222023373. The next prime is 22424222023433. The reversal of 22424222023421 is 12432022242422.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22424222023421 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22424222023451) 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, 5254796 + ... + 8512421.

It is an arithmetic number, because the mean of its divisors is an integer number (1501315122900).

Almost surely, 2^{22424222023421} is an apocalyptic number.

It is an amenable number.

22424222023421 is a deficient number, since it is larger than the sum of its proper divisors (1596819942979).

22424222023421 is a wasteful number, since it uses less digits than its factorization.

22424222023421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13768748.

The product of its (nonzero) digits is 49152, while the sum is 32.

Adding to 22424222023421 its reverse (12432022242422), we get a palindrome (34856244265843).

The spelling of 22424222023421 in words is "twenty-two trillion, four hundred twenty-four billion, two hundred twenty-two million, twenty-three thousand, four hundred twenty-one".