11311212242 has 16 divisors (see below), whose sum is σ = 19598036832. Its totient is φ = 4839021120.

The previous prime is 11311212239. The next prime is 11311212299. The reversal of 11311212242 is 24221211311.

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, 15121568 + ... + 15122315.

It is an arithmetic number, because the mean of its divisors is an integer number (1224877302).

Almost surely, 2^11311212242 is an apocalyptic number.

11311212242 is a deficient number, since it is larger than the sum of its proper divisors (8286824590).

11311212242 is a wasteful number, since it uses less digits than its factorization.

11311212242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30243913.

The product of its digits is 192, while the sum is 20.

Adding to 11311212242 its reverse (24221211311), we get a palindrome (35532423553).

The spelling of 11311212242 in words is "eleven billion, three hundred eleven million, two hundred twelve thousand, two hundred forty-two".