11011202111221 has 8 divisors (see below), whose sum is σ = 11858806641920. Its totient is φ = 10163681721072.

The previous prime is 11011202111219. The next prime is 11011202111243. The reversal of 11011202111221 is 12211120211011.

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 11011202111221 - 2¹ = 11011202111219 is a prime.

It is a super-2 number, since 2×11011202111221² (a number of 27 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 = 11011202111195 and 11011202111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011202111251) 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, 20763201 + ... + 21286918.

It is an arithmetic number, because the mean of its divisors is an integer number (1482350830240).

Almost surely, 2^{11011202111221} is an apocalyptic number.

It is an amenable number.

11011202111221 is a deficient number, since it is larger than the sum of its proper divisors (847604530699).

11011202111221 is a wasteful number, since it uses less digits than its factorization.

11011202111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42070275.

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

Adding to 11011202111221 its reverse (12211120211011), we get a palindrome (23222322322232).

The spelling of 11011202111221 in words is "eleven trillion, eleven billion, two hundred two million, one hundred eleven thousand, two hundred twenty-one".