11220221123 has 8 divisors (see below), whose sum is σ = 11957165568. Its totient is φ = 10504035784.

The previous prime is 11220221113. The next prime is 11220221143. The reversal of 11220221123 is 32112202211.

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

It is not a de Polignac number, because 11220221123 - 2⁶ = 11220221059 is a prime.

It is a super-2 number, since 2×11220221123² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11220221113) 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, 5188661 + ... + 5190822.

It is an arithmetic number, because the mean of its divisors is an integer number (1494645696).

Almost surely, 2^11220221123 is an apocalyptic number.

11220221123 is a deficient number, since it is larger than the sum of its proper divisors (736944445).

11220221123 is a wasteful number, since it uses less digits than its factorization.

11220221123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10379553.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 11220221123 its reverse (32112202211), we get a palindrome (43332423334).

The spelling of 11220221123 in words is "eleven billion, two hundred twenty million, two hundred twenty-one thousand, one hundred twenty-three".