12011144442 has 32 divisors (see below), whose sum is σ = 26273557440. Its totient is φ = 3630376320.

The previous prime is 12011144423. The next prime is 12011144461. The reversal of 12011144442 is 24444111021.

It is an interprime number because it is at equal distance from previous prime (12011144423) and next prime (12011144461).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208243 + ... + 259590.

It is an arithmetic number, because the mean of its divisors is an integer number (821048670).

Almost surely, 2^12011144442 is an apocalyptic number.

12011144442 is an abundant number, since it is smaller than the sum of its proper divisors (14262412998).

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

12011144442 is a wasteful number, since it uses less digits than its factorization.

12011144442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 468238.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 12011144442 its reverse (24444111021), we get a palindrome (36455255463).

The spelling of 12011144442 in words is "twelve billion, eleven million, one hundred forty-four thousand, four hundred forty-two".