11213220012 has 12 divisors (see below), whose sum is σ = 26164180056. Its totient is φ = 3737740000.

The previous prime is 11213219999. The next prime is 11213220023. The reversal of 11213220012 is 21002231211.

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 = 11213219973 and 11213220000.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 467217489 + ... + 467217512.

It is an arithmetic number, because the mean of its divisors is an integer number (2180348338).

Almost surely, 2^11213220012 is an apocalyptic number.

11213220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11213220012 is an abundant number, since it is smaller than the sum of its proper divisors (14950960044).

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

11213220012 is a wasteful number, since it uses less digits than its factorization.

11213220012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934435008 (or 934435006 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11213220012 its reverse (21002231211), we get a palindrome (32215451223).

The spelling of 11213220012 in words is "eleven billion, two hundred thirteen million, two hundred twenty thousand, twelve".