11111231444 has 6 divisors (see below), whose sum is σ = 19444655034. Its totient is φ = 5555615720.

The previous prime is 11111231429. The next prime is 11111231449. The reversal of 11111231444 is 44413211111.

It can be written as a sum of positive squares in only one way, i.e., 9787144900 + 1324086544 = 98930^2 + 36388^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11111231449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1388903927 + ... + 1388903934.

It is an arithmetic number, because the mean of its divisors is an integer number (3240775839).

Almost surely, 2^11111231444 is an apocalyptic number.

It is an amenable number.

11111231444 is a deficient number, since it is larger than the sum of its proper divisors (8333423590).

11111231444 is a wasteful number, since it uses less digits than its factorization.

11111231444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777807865 (or 2777807863 counting only the distinct ones).

The product of its digits is 384, while the sum is 23.

Adding to 11111231444 its reverse (44413211111), we get a palindrome (55524442555).

The spelling of 11111231444 in words is "eleven billion, one hundred eleven million, two hundred thirty-one thousand, four hundred forty-four".