22201221423 has 8 divisors (see below), whose sum is σ = 30556519936. Its totient is φ = 14323368600.

The previous prime is 22201221421. The next prime is 22201221437. The reversal of 22201221423 is 32412210222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22201221423 - 2¹ = 22201221421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22201221423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22201221421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119361313 + ... + 119361498.

It is an arithmetic number, because the mean of its divisors is an integer number (3819564992).

Almost surely, 2^22201221423 is an apocalyptic number.

22201221423 is a deficient number, since it is larger than the sum of its proper divisors (8355298513).

22201221423 is a wasteful number, since it uses less digits than its factorization.

22201221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238722845.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 22201221423 its reverse (32412210222), we get a palindrome (54613431645).

The spelling of 22201221423 in words is "twenty-two billion, two hundred one million, two hundred twenty-one thousand, four hundred twenty-three".