201011222221 has 8 divisors (see below), whose sum is σ = 203850835200. Its totient is φ = 198188264400.

The previous prime is 201011222219. The next prime is 201011222249. The reversal of 201011222221 is 122222110102.

It is a happy number.

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

It is not a de Polignac number, because 201011222221 - 2¹ = 201011222219 is a prime.

It is a super-2 number, since 2×201011222221² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201011222195 and 201011222204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201011222281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4139481 + ... + 4187758.

It is an arithmetic number, because the mean of its divisors is an integer number (25481354400).

Almost surely, 2^201011222221 is an apocalyptic number.

It is an amenable number.

201011222221 is a deficient number, since it is larger than the sum of its proper divisors (2839612979).

201011222221 is a wasteful number, since it uses less digits than its factorization.

201011222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8327579.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201011222221 its reverse (122222110102), we get a palindrome (323233332323).

The spelling of 201011222221 in words is "two hundred one billion, eleven million, two hundred twenty-two thousand, two hundred twenty-one".