201111220065 has 32 divisors (see below), whose sum is σ = 367858068480. Its totient is φ = 91908598464.

The previous prime is 201111219983. The next prime is 201111220129. The reversal of 201111220065 is 560022111102.

It is not a de Polignac number, because 201111220065 - 2⁸ = 201111219809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 57646 + ... + 636824.

It is an arithmetic number, because the mean of its divisors is an integer number (11495564640).

Almost surely, 2^201111220065 is an apocalyptic number.

It is an amenable number.

201111220065 is a deficient number, since it is larger than the sum of its proper divisors (166746848415).

201111220065 is a wasteful number, since it uses less digits than its factorization.

201111220065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582501.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 201111220065 its reverse (560022111102), we get a palindrome (761133331167).

The spelling of 201111220065 in words is "two hundred one billion, one hundred eleven million, two hundred twenty thousand, sixty-five".