11011030221021 has 16 divisors (see below), whose sum is σ = 14695867666944. Its totient is φ = 7333443354944.

The previous prime is 11011030221019. The next prime is 11011030221073. The reversal of 11011030221021 is 12012203011011.

It is a cyclic number.

It is not a de Polignac number, because 11011030221021 - 2¹ = 11011030221019 is a prime.

It is a super-2 number, since 2×11011030221021² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11011030221221) 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 15 ways as a sum of consecutive naturals, for example, 11984611 + ... + 12870623.

It is an arithmetic number, because the mean of its divisors is an integer number (918491729184).

Almost surely, 2^{11011030221021} is an apocalyptic number.

It is an amenable number.

11011030221021 is a deficient number, since it is larger than the sum of its proper divisors (3684837445923).

11011030221021 is a wasteful number, since it uses less digits than its factorization.

11011030221021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 890100.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 11011030221021 its reverse (12012203011011), we get a palindrome (23023233232032).

The spelling of 11011030221021 in words is "eleven trillion, eleven billion, thirty million, two hundred twenty-one thousand, twenty-one".