11212031444 has 24 divisors (see below), whose sum is σ = 20563589760. Its totient is φ = 5338849824.

The previous prime is 11212031353. The next prime is 11212031459. The reversal of 11212031444 is 44413021211.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

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, 245024 + ... + 287159.

It is an arithmetic number, because the mean of its divisors is an integer number (856816240).

Almost surely, 2^11212031444 is an apocalyptic number.

It is an amenable number.

11212031444 is a deficient number, since it is larger than the sum of its proper divisors (9351558316).

11212031444 is a wasteful number, since it uses less digits than its factorization.

11212031444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532439 (or 532437 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 11212031444 its reverse (44413021211), we get a palindrome (55625052655).

The spelling of 11212031444 in words is "eleven billion, two hundred twelve million, thirty-one thousand, four hundred forty-four".