22221545440433 has 4 divisors (see below), whose sum is σ = 22383746502180. Its totient is φ = 22059344378688.

The previous prime is 22221545440427. The next prime is 22221545440441. The reversal of 22221545440433 is 33404454512222.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11808487577104 + 10413057863329 = 3436348^2 + 3226927^2 .

It is a cyclic number.

It is not a de Polignac number, because 22221545440433 - 2⁸ = 22221545440177 is a prime.

It is a super-2 number, since 2×22221545440433² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22221545446433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81100530668 + ... + 81100530941.

It is an arithmetic number, because the mean of its divisors is an integer number (5595936625545).

Almost surely, 2^{22221545440433} is an apocalyptic number.

It is an amenable number.

22221545440433 is a deficient number, since it is larger than the sum of its proper divisors (162201061747).

22221545440433 is a wasteful number, since it uses less digits than its factorization.

22221545440433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162201061746.

The product of its (nonzero) digits is 921600, while the sum is 41.

Adding to 22221545440433 its reverse (33404454512222), we get a palindrome (55625999952655).

The spelling of 22221545440433 in words is "twenty-two trillion, two hundred twenty-one billion, five hundred forty-five million, four hundred forty thousand, four hundred thirty-three".