201221122130011 has 8 divisors (see below), whose sum is σ = 216668805485040. Its totient is φ = 186174677303808.

The previous prime is 201221122129991. The next prime is 201221122130047. The reversal of 201221122130011 is 110031221122102.

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 201221122130011 - 2¹⁹ = 201221121605723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201221122130081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100309631166 + ... + 100309633171.

It is an arithmetic number, because the mean of its divisors is an integer number (27083600685630).

Almost surely, 2^{201221122130011} is an apocalyptic number.

201221122130011 is a deficient number, since it is larger than the sum of its proper divisors (15447683355029).

201221122130011 is a wasteful number, since it uses less digits than its factorization.

201221122130011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200619264413.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 201221122130011 its reverse (110031221122102), we get a palindrome (311252343252113).

The spelling of 201221122130011 in words is "two hundred one trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred thirty thousand, eleven".