11211310042 has 16 divisors (see below), whose sum is σ = 18420206760. Its totient is φ = 5093982208.

The previous prime is 11211310027. The next prime is 11211310139. The reversal of 11211310042 is 24001311211.

It can be written as a sum of positive squares in 4 ways, for example, as 11153260881 + 58049161 = 105609^2 + 7619^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11211309998 and 11211310025.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5684263 + ... + 5686234.

Almost surely, 2^11211310042 is an apocalyptic number.

11211310042 is a deficient number, since it is larger than the sum of its proper divisors (7208896718).

11211310042 is a wasteful number, since it uses less digits than its factorization.

11211310042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11370545.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 11211310042 its reverse (24001311211), we get a palindrome (35212621253).

The spelling of 11211310042 in words is "eleven billion, two hundred eleven million, three hundred ten thousand, forty-two".