11231223020 has 48 divisors (see below), whose sum is σ = 24172162560. Its totient is φ = 4382129856.

The previous prime is 11231223011. The next prime is 11231223097. The reversal of 11231223020 is 2032213211.

It is a super-2 number, since 2×11231223020² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 11231223020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88319 + ... + 173961.

It is an arithmetic number, because the mean of its divisors is an integer number (503586720).

Almost surely, 2^11231223020 is an apocalyptic number.

11231223020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11231223020 is an abundant number, since it is smaller than the sum of its proper divisors (12940939540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11231223020 is a wasteful number, since it uses less digits than its factorization.

11231223020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85814 (or 85812 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 11231223020 its reverse (2032213211), we get a palindrome (13263436231).

The spelling of 11231223020 in words is "eleven billion, two hundred thirty-one million, two hundred twenty-three thousand, twenty".