11031220012 has 6 divisors (see below), whose sum is σ = 19304635028. Its totient is φ = 5515610004.

The previous prime is 11031220001. The next prime is 11031220037. The reversal of 11031220012 is 21002213011.

It is a junction number, because it is equal to n+sod(n) for n = 11031219974 and 11031220001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1378902498 + ... + 1378902505.

Almost surely, 2^11031220012 is an apocalyptic number.

It is an amenable number.

11031220012 is a deficient number, since it is larger than the sum of its proper divisors (8273415016).

11031220012 is a wasteful number, since it uses less digits than its factorization.

11031220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2757805007 (or 2757805005 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 11031220012 its reverse (21002213011), we get a palindrome (32033433023).

The spelling of 11031220012 in words is "eleven billion, thirty-one million, two hundred twenty thousand, twelve".