11112332222221 has 16 divisors (see below), whose sum is σ = 11609895297024. Its totient is φ = 10615972785264.

The previous prime is 11112332222197. The next prime is 11112332222237. The reversal of 11112332222221 is 12222223321111.

It is a cyclic number.

It is not a de Polignac number, because 11112332222221 - 2⁷ = 11112332222093 is a prime.

It is a super-2 number, since 2×11112332222221² (a number of 27 digits) contains 22 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 (11112332222821) 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, 452683870 + ... + 452708416.

It is an arithmetic number, because the mean of its divisors is an integer number (725618456064).

Almost surely, 2^{11112332222221} is an apocalyptic number.

It is an amenable number.

11112332222221 is a deficient number, since it is larger than the sum of its proper divisors (497563074803).

11112332222221 is a wasteful number, since it uses less digits than its factorization.

11112332222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48240.

The product of its digits is 1152, while the sum is 25.

Adding to 11112332222221 its reverse (12222223321111), we get a palindrome (23334555543332).

The spelling of 11112332222221 in words is "eleven trillion, one hundred twelve billion, three hundred thirty-two million, two hundred twenty-two thousand, two hundred twenty-one".