22221021454442 has 8 divisors (see below), whose sum is σ = 33331555939332. Its totient is φ = 11110502808000.

The previous prime is 22221021454369. The next prime is 22221021454469. The reversal of 22221021454442 is 24445412012222.

It can be written as a sum of positive squares in 2 ways, for example, as 16727290189801 + 5493731264641 = 4089901^2 + 2343871^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 596192 + ... + 6693092.

Almost surely, 2^{22221021454442} is an apocalyptic number.

22221021454442 is a deficient number, since it is larger than the sum of its proper divisors (11110534484890).

22221021454442 is a wasteful number, since it uses less digits than its factorization.

22221021454442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7919224.

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 22221021454442 its reverse (24445412012222), we get a palindrome (46666433466664).

The spelling of 22221021454442 in words is "twenty-two trillion, two hundred twenty-one billion, twenty-one million, four hundred fifty-four thousand, four hundred forty-two".