11311222220442 has 48 divisors (see below), whose sum is σ = 25594492442688. Its totient is φ = 3603473596800.

The previous prime is 11311222220437. The next prime is 11311222220443. The reversal of 11311222220442 is 24402222211311.

It is not an unprimeable number, because it can be changed into a prime (11311222220443) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10877388 + ... + 11871815.

It is an arithmetic number, because the mean of its divisors is an integer number (533218592556).

Almost surely, 2^{11311222220442} is an apocalyptic number.

11311222220442 is an abundant number, since it is smaller than the sum of its proper divisors (14283270222246).

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

11311222220442 is a wasteful number, since it uses less digits than its factorization.

11311222220442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22750435 (or 22750432 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 11311222220442 its reverse (24402222211311), we get a palindrome (35713444431753).

The spelling of 11311222220442 in words is "eleven trillion, three hundred eleven billion, two hundred twenty-two million, two hundred twenty thousand, four hundred forty-two".