22041113645 has 4 divisors (see below), whose sum is σ = 26449336380. Its totient is φ = 17632890912.

The previous prime is 22041113641. The next prime is 22041113669. The reversal of 22041113645 is 54631114022.

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 13973840521 + 8067273124 = 118211^2 + 89818^2 .

It is a cyclic number.

It is not a de Polignac number, because 22041113645 - 2² = 22041113641 is a prime.

It is a super-3 number, since 3×22041113645³ (a number of 32 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22041113641) 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, 2204111360 + ... + 2204111369.

It is an arithmetic number, because the mean of its divisors is an integer number (6612334095).

Almost surely, 2^22041113645 is an apocalyptic number.

It is an amenable number.

22041113645 is a deficient number, since it is larger than the sum of its proper divisors (4408222735).

22041113645 is an equidigital number, since it uses as much as digits as its factorization.

22041113645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4408222734.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 22041113645 its reverse (54631114022), we get a palindrome (76672227667).

The spelling of 22041113645 in words is "twenty-two billion, forty-one million, one hundred thirteen thousand, six hundred forty-five".