11220211331 has 32 divisors (see below), whose sum is σ = 14027489280. Its totient is φ = 8766777600.

The previous prime is 11220211297. The next prime is 11220211337. The reversal of 11220211331 is 13311202211.

11220211331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11220211331 - 2⁶ = 11220211267 is a prime.

It is a super-2 number, since 2×11220211331² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11220211337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236270 + ... + 279756.

It is an arithmetic number, because the mean of its divisors is an integer number (438359040).

Almost surely, 2^11220211331 is an apocalyptic number.

11220211331 is a deficient number, since it is larger than the sum of its proper divisors (2807277949).

11220211331 is a wasteful number, since it uses less digits than its factorization.

11220211331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43595.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11220211331 its reverse (13311202211), we get a palindrome (24531413542).

The spelling of 11220211331 in words is "eleven billion, two hundred twenty million, two hundred eleven thousand, three hundred thirty-one".