11221012231 has 64 divisors (see below), whose sum is σ = 14716670976. Its totient is φ = 8388864000.

The previous prime is 11221012223. The next prime is 11221012261. The reversal of 11221012231 is 13221012211.

11221012231 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 11221012231 - 2³ = 11221012223 is a prime.

It is a super-2 number, since 2×11221012231² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11221012261) 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 63 ways as a sum of consecutive naturals, for example, 5646220 + ... + 5648206.

It is an arithmetic number, because the mean of its divisors is an integer number (229947984).

Almost surely, 2^11221012231 is an apocalyptic number.

11221012231 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11221012231 is a deficient number, since it is larger than the sum of its proper divisors (3495658745).

11221012231 is a wasteful number, since it uses less digits than its factorization.

11221012231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2152.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11221012231 its reverse (13221012211), we get a palindrome (24442024442).

The spelling of 11221012231 in words is "eleven billion, two hundred twenty-one million, twelve thousand, two hundred thirty-one".