11143211444 has 6 divisors (see below), whose sum is σ = 19500620034. Its totient is φ = 5571605720.

The previous prime is 11143211437. The next prime is 11143211503. The reversal of 11143211444 is 44411234111.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7983422500 + 3159788944 = 89350^2 + 56212^2 .

It is a super-2 number, since 2×11143211444² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1392901427 + ... + 1392901434.

It is an arithmetic number, because the mean of its divisors is an integer number (3250103339).

Almost surely, 2^11143211444 is an apocalyptic number.

It is an amenable number.

11143211444 is a deficient number, since it is larger than the sum of its proper divisors (8357408590).

11143211444 is a wasteful number, since it uses less digits than its factorization.

11143211444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2785802865 (or 2785802863 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

Adding to 11143211444 its reverse (44411234111), we get a palindrome (55554445555).

The spelling of 11143211444 in words is "eleven billion, one hundred forty-three million, two hundred eleven thousand, four hundred forty-four".