11022211242 has 96 divisors (see below), whose sum is σ = 28962565632. Its totient is φ = 3075925104.

The previous prime is 11022211241. The next prime is 11022211253. The reversal of 11022211242 is 24211222011.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (11022211241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 108613 + ... + 183959.

It is an arithmetic number, because the mean of its divisors is an integer number (301693392).

Almost surely, 2^11022211242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11022211242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14481282816).

11022211242 is an abundant number, since it is smaller than the sum of its proper divisors (17940354390).

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

11022211242 is an equidigital number, since it uses as much as digits as its factorization.

11022211242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75414 (or 75402 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 11022211242 its reverse (24211222011), we get a palindrome (35233433253).

The spelling of 11022211242 in words is "eleven billion, twenty-two million, two hundred eleven thousand, two hundred forty-two".