10011220011221 has 16 divisors (see below), whose sum is σ = 11761585963008. Its totient is φ = 8400914740800.

The previous prime is 10011220011203. The next prime is 10011220011259. The reversal of 10011220011221 is 12211002211001.

It is a cyclic number.

It is not a de Polignac number, because 10011220011221 - 2⁶ = 10011220011157 is a prime.

It is a super-2 number, since 2×10011220011221² (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 = 10011220011196 and 10011220011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011220011281) 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 15 ways as a sum of consecutive naturals, for example, 11741855 + ... + 12565571.

It is an arithmetic number, because the mean of its divisors is an integer number (735099122688).

Almost surely, 2^{10011220011221} is an apocalyptic number.

10011220011221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011220011221 is a deficient number, since it is larger than the sum of its proper divisors (1750365951787).

10011220011221 is a wasteful number, since it uses less digits than its factorization.

10011220011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 908732.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 10011220011221 its reverse (12211002211001), we get a palindrome (22222222222222).

The spelling of 10011220011221 in words is "ten trillion, eleven billion, two hundred twenty million, eleven thousand, two hundred twenty-one".