11121200222221 has 8 divisors (see below), whose sum is σ = 11371073194080. Its totient is φ = 10872810176592.

The previous prime is 11121200222141. The next prime is 11121200222227. The reversal of 11121200222221 is 12222200212111.

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 11121200222221 - 2¹¹ = 11121200220173 is a prime.

It is a super-4 number, since 4×11121200222221⁴ (a number of 53 digits) contains 4444 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11121200222227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370716391 + ... + 370746388.

It is an arithmetic number, because the mean of its divisors is an integer number (1421384149260).

Almost surely, 2^{11121200222221} is an apocalyptic number.

It is an amenable number.

11121200222221 is a deficient number, since it is larger than the sum of its proper divisors (249872971859).

11121200222221 is an equidigital number, since it uses as much as digits as its factorization.

11121200222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741463115.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 11121200222221 its reverse (12222200212111), we get a palindrome (23343400434332).

The spelling of 11121200222221 in words is "eleven trillion, one hundred twenty-one billion, two hundred million, two hundred twenty-two thousand, two hundred twenty-one".