11221201102221 has 40 divisors (see below), whose sum is σ = 18351018469344. Its totient is φ = 6776696947680.

The previous prime is 11221201102219. The next prime is 11221201102259. The reversal of 11221201102221 is 12220110212211.

11221201102221 is a `hidden beast` number, since 11 + 221 + 201 + 10 + 2 + 221 = 666.

It is not a de Polignac number, because 11221201102221 - 2¹ = 11221201102219 is a prime.

It is a super-2 number, since 2×11221201102221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11221201102194 and 11221201102203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221201102121) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21998626 + ... + 22502931.

Almost surely, 2^{11221201102221} is an apocalyptic number.

11221201102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11221201102221 is a deficient number, since it is larger than the sum of its proper divisors (7129817367123).

11221201102221 is a wasteful number, since it uses less digits than its factorization.

11221201102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44501863 (or 44501854 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 11221201102221 its reverse (12220110212211), we get a palindrome (23441311314432).

The spelling of 11221201102221 in words is "eleven trillion, two hundred twenty-one billion, two hundred one million, one hundred two thousand, two hundred twenty-one".