11221200012 has 48 divisors (see below), whose sum is σ = 29335041792. Its totient is φ = 3308460480.

The previous prime is 11221200007. The next prime is 11221200043. The reversal of 11221200012 is 21000212211.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 1143888 + ... + 1153655.

It is an arithmetic number, because the mean of its divisors is an integer number (611146704).

Almost surely, 2^11221200012 is an apocalyptic number.

11221200012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11221200012 is an abundant number, since it is smaller than the sum of its proper divisors (18113841780).

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

11221200012 is a wasteful number, since it uses less digits than its factorization.

11221200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2297598 (or 2297596 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 11221200012 its reverse (21000212211), we get a palindrome (32221412223).

The spelling of 11221200012 in words is "eleven billion, two hundred twenty-one million, two hundred thousand, twelve".