11222232012 has 18 divisors (see below), whose sum is σ = 28367308788. Its totient is φ = 3740743992.

The previous prime is 11222231929. The next prime is 11222232017. The reversal of 11222232012 is 21023222211.

11222232012 is a `hidden beast` number, since 112 + 222 + 320 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

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 (11222232017) 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 5 ways as a sum of consecutive naturals, for example, 155864298 + ... + 155864369.

Almost surely, 2^11222232012 is an apocalyptic number.

11222232012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11222232012 is an abundant number, since it is smaller than the sum of its proper divisors (17145076776).

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

11222232012 is a wasteful number, since it uses less digits than its factorization.

11222232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311728677 (or 311728672 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 11222232012 its reverse (21023222211), we get a palindrome (32245454223).

The spelling of 11222232012 in words is "eleven billion, two hundred twenty-two million, two hundred thirty-two thousand, twelve".