11331022212 has 72 divisors (see below), whose sum is σ = 28883446592. Its totient is φ = 3745310400.

The previous prime is 11331022211. The next prime is 11331022217. The reversal of 11331022212 is 21222013311.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11331022211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3225537 + ... + 3229047.

Almost surely, 2^11331022212 is an apocalyptic number.

11331022212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11331022212 is an abundant number, since it is smaller than the sum of its proper divisors (17552424380).

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

11331022212 is a wasteful number, since it uses less digits than its factorization.

11331022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4249 (or 4244 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 11331022212 its reverse (21222013311), we get a palindrome (32553035523).

The spelling of 11331022212 in words is "eleven billion, three hundred thirty-one million, twenty-two thousand, two hundred twelve".