221001021200011 has 8 divisors (see below), whose sum is σ = 240225409098864. Its totient is φ = 202094391779040.

The previous prime is 221001021199993. The next prime is 221001021200033. The reversal of 221001021200011 is 110002120100122.

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 221001021200011 - 2¹⁵ = 221001021167243 is a prime.

It is a super-2 number, since 2×221001021200011² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221001021199964 and 221001021200000.

It is not an unprimeable number, because it can be changed into a prime (221001021260011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79439618020 + ... + 79439620801.

It is an arithmetic number, because the mean of its divisors is an integer number (30028176137358).

Almost surely, 2^{221001021200011} is an apocalyptic number.

221001021200011 is a deficient number, since it is larger than the sum of its proper divisors (19224387898853).

221001021200011 is a wasteful number, since it uses less digits than its factorization.

221001021200011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158879238941.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221001021200011 its reverse (110002120100122), we get a palindrome (331003141300133).

The spelling of 221001021200011 in words is "two hundred twenty-one trillion, one billion, twenty-one million, two hundred thousand, eleven".