11220101012221 has 4 divisors (see below), whose sum is σ = 11220485990112. Its totient is φ = 11219716034332.

The previous prime is 11220101012203. The next prime is 11220101012227. The reversal of 11220101012221 is 12221010102211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11220101012221 - 2⁹ = 11220101011709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11220101012195 and 11220101012204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220101012227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192445225 + ... + 192503518.

It is an arithmetic number, because the mean of its divisors is an integer number (2805121497528).

Almost surely, 2^{11220101012221} is an apocalyptic number.

It is an amenable number.

11220101012221 is a deficient number, since it is larger than the sum of its proper divisors (384977891).

11220101012221 is an equidigital number, since it uses as much as digits as its factorization.

11220101012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384977890.

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

Adding to 11220101012221 its reverse (12221010102211), we get a palindrome (23441111114432).

The spelling of 11220101012221 in words is "eleven trillion, two hundred twenty billion, one hundred one million, twelve thousand, two hundred twenty-one".