11220222012 has 12 divisors (see below), whose sum is σ = 26180518056. Its totient is φ = 3740074000.

The previous prime is 11220222001. The next prime is 11220222017. The reversal of 11220222012 is 21022202211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 11220221982 and 11220222000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11220222017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467509239 + ... + 467509262.

It is an arithmetic number, because the mean of its divisors is an integer number (2181709838).

Almost surely, 2^11220222012 is an apocalyptic number.

11220222012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11220222012 is an abundant number, since it is smaller than the sum of its proper divisors (14960296044).

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

11220222012 is a wasteful number, since it uses less digits than its factorization.

11220222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935018508 (or 935018506 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 11220222012 its reverse (21022202211), we get a palindrome (32242424223).

The spelling of 11220222012 in words is "eleven billion, two hundred twenty million, two hundred twenty-two thousand, twelve".