11012101220221 has 8 divisors (see below), whose sum is σ = 11675274630840. Its totient is φ = 10350639226368.

The previous prime is 11012101220203. The next prime is 11012101220227. The reversal of 11012101220221 is 12202210121011.

It can be written as a sum of positive squares in 4 ways, for example, as 6748247912121 + 4263853308100 = 2597739^2 + 2064910^2 .

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 11012101220221 - 2¹⁷ = 11012101089149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11012101220195 and 11012101220204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11012101220227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 427840936 + ... + 427866673.

It is an arithmetic number, because the mean of its divisors is an integer number (1459409328855).

Almost surely, 2^{11012101220221} is an apocalyptic number.

It is an amenable number.

11012101220221 is a deficient number, since it is larger than the sum of its proper divisors (663173410619).

11012101220221 is an equidigital number, since it uses as much as digits as its factorization.

11012101220221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855708383.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 11012101220221 its reverse (12202210121011), we get a palindrome (23214311341232).

The spelling of 11012101220221 in words is "eleven trillion, twelve billion, one hundred one million, two hundred twenty thousand, two hundred twenty-one".