1131202022004 has 72 divisors (see below), whose sum is σ = 3132029988360. Its totient is φ = 342649423872.

The previous prime is 1131202022003. The next prime is 1131202022011. The reversal of 1131202022004 is 4002202021311.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 179792960400 + 951409061604 = 424020^2 + 975402^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131202022003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31850689 + ... + 31886184.

It is an arithmetic number, because the mean of its divisors is an integer number (43500416505).

Almost surely, 2^{1131202022004} is an apocalyptic number.

It is an amenable number.

1131202022004 is an abundant number, since it is smaller than the sum of its proper divisors (2000827966356).

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

1131202022004 is a wasteful number, since it uses less digits than its factorization.

1131202022004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63736929 (or 63736924 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1131202022004 its reverse (4002202021311), we get a palindrome (5133404043315).

The spelling of 1131202022004 in words is "one trillion, one hundred thirty-one billion, two hundred two million, twenty-two thousand, four".