201221232011 has 8 divisors (see below), whose sum is σ = 201330315264. Its totient is φ = 201112185960.

The previous prime is 201221231977. The next prime is 201221232053. The reversal of 201221232011 is 110232122102.

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

It is a cyclic number.

It is not a de Polignac number, because 201221232011 - 2³⁰ = 200147490187 is a prime.

It is a super-3 number, since 3×201221232011³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221238011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22781366 + ... + 22790196.

It is an arithmetic number, because the mean of its divisors is an integer number (25166289408).

Almost surely, 2^201221232011 is an apocalyptic number.

201221232011 is a deficient number, since it is larger than the sum of its proper divisors (109083253).

201221232011 is an equidigital number, since it uses as much as digits as its factorization.

201221232011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18601.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 201221232011 its reverse (110232122102), we get a palindrome (311453354113).

The spelling of 201221232011 in words is "two hundred one billion, two hundred twenty-one million, two hundred thirty-two thousand, eleven".