11220342065 has 4 divisors (see below), whose sum is σ = 13464410484. Its totient is φ = 8976273648.

The previous prime is 11220342037. The next prime is 11220342109. The reversal of 11220342065 is 56024302211.

It is a happy number.

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 7763019664 + 3457322401 = 88108^2 + 58799^2 .

It is a cyclic number.

It is not a de Polignac number, because 11220342065 - 2⁸ = 11220341809 is a prime.

It is a Duffinian number.

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, 1122034202 + ... + 1122034211.

It is an arithmetic number, because the mean of its divisors is an integer number (3366102621).

Almost surely, 2^11220342065 is an apocalyptic number.

It is an amenable number.

11220342065 is a deficient number, since it is larger than the sum of its proper divisors (2244068419).

11220342065 is an equidigital number, since it uses as much as digits as its factorization.

11220342065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244068418.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 11220342065 its reverse (56024302211), we get a palindrome (67244644276).

The spelling of 11220342065 in words is "eleven billion, two hundred twenty million, three hundred forty-two thousand, sixty-five".