11220020012 has 24 divisors (see below), whose sum is σ = 19886150592. Its totient is φ = 5538362000.

The previous prime is 11220020003. The next prime is 11220020017. The reversal of 11220020012 is 21002002211.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11220019975 and 11220020002.

It is not an unprimeable number, because it can be changed into a prime (11220020017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 470087 + ... + 493377.

It is an arithmetic number, because the mean of its divisors is an integer number (828589608).

Almost surely, 2^11220020012 is an apocalyptic number.

It is an amenable number.

11220020012 is a deficient number, since it is larger than the sum of its proper divisors (8666130580).

11220020012 is a wasteful number, since it uses less digits than its factorization.

11220020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24829 (or 24827 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 11220020012 its reverse (21002002211), we get a palindrome (32222022223).

The spelling of 11220020012 in words is "eleven billion, two hundred twenty million, twenty thousand, twelve".