11202220221221 has 8 divisors (see below), whose sum is σ = 11805865377600. Its totient is φ = 10599980526720.

The previous prime is 11202220221211. The next prime is 11202220221229. The reversal of 11202220221221 is 12212202220211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202220221221 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202220221193 and 11202220221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11202220221229) 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 7 ways as a sum of consecutive naturals, for example, 351349100 + ... + 351380981.

It is an arithmetic number, because the mean of its divisors is an integer number (1475733172200).

Almost surely, 2^{11202220221221} is an apocalyptic number.

It is an amenable number.

11202220221221 is a deficient number, since it is larger than the sum of its proper divisors (603645156379).

11202220221221 is an equidigital number, since it uses as much as digits as its factorization.

11202220221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702730939.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 11202220221221 its reverse (12212202220211), we get a palindrome (23414422441432).

The spelling of 11202220221221 in words is "eleven trillion, two hundred two billion, two hundred twenty million, two hundred twenty-one thousand, two hundred twenty-one".