11202212212121 has 16 divisors (see below), whose sum is σ = 12880714272000. Its totient is φ = 9543360549888.

The previous prime is 11202212212073. The next prime is 11202212212123. The reversal of 11202212212121 is 12121221220211.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11202212212121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11202212212093 and 11202212212102.

It is not an unprimeable number, because it can be changed into a prime (11202212212123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3034100 + ... + 5622293.

It is an arithmetic number, because the mean of its divisors is an integer number (805044642000).

Almost surely, 2^{11202212212121} is an apocalyptic number.

It is an amenable number.

11202212212121 is a deficient number, since it is larger than the sum of its proper divisors (1678502059879).

11202212212121 is an equidigital number, since it uses as much as digits as its factorization.

11202212212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8657528.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11202212212121 its reverse (12121221220211), we get a palindrome (23323433432332).

The spelling of 11202212212121 in words is "eleven trillion, two hundred two billion, two hundred twelve million, two hundred twelve thousand, one hundred twenty-one".