11222211042 has 32 divisors (see below), whose sum is σ = 28500854400. Its totient is φ = 3206345904.

The previous prime is 11222211001. The next prime is 11222211047. The reversal of 11222211042 is 24011222211.

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 (11222211047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14843817 + ... + 14844572.

It is an arithmetic number, because the mean of its divisors is an integer number (890651700).

Almost surely, 2^11222211042 is an apocalyptic number.

11222211042 is an abundant number, since it is smaller than the sum of its proper divisors (17278643358).

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

11222211042 is a wasteful number, since it uses less digits than its factorization.

11222211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29688407 (or 29688401 counting only the distinct ones).

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

Adding to 11222211042 its reverse (24011222211), we get a palindrome (35233433253).

The spelling of 11222211042 in words is "eleven billion, two hundred twenty-two million, two hundred eleven thousand, forty-two".