1131230221444 has 6 divisors (see below), whose sum is σ = 1979652887534. Its totient is φ = 565615110720.

The previous prime is 1131230221441. The next prime is 1131230221447. The reversal of 1131230221444 is 4441220321311.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1131230221441) and next prime (1131230221447).

It can be written as a sum of positive squares in only one way, i.e., 881180218944 + 250050002500 = 938712^2 + 500050^2 .

It is not an unprimeable number, because it can be changed into a prime (1131230221441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 141403777677 + ... + 141403777684.

Almost surely, 2^{1131230221444} is an apocalyptic number.

It is an amenable number.

1131230221444 is a deficient number, since it is larger than the sum of its proper divisors (848422666090).

1131230221444 is a wasteful number, since it uses less digits than its factorization.

1131230221444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282807555365 (or 282807555363 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 1131230221444 its reverse (4441220321311), we get a palindrome (5572450542755).

The spelling of 1131230221444 in words is "one trillion, one hundred thirty-one billion, two hundred thirty million, two hundred twenty-one thousand, four hundred forty-four".