1131003221000 has 32 divisors (see below), whose sum is σ = 2646547539480. Its totient is φ = 452401288000.

The previous prime is 1131003220969. The next prime is 1131003221003. The reversal of 1131003221000 is 1223001311.

It can be written as a sum of positive squares in 4 ways, for example, as 527979530884 + 603023690116 = 726622^2 + 776546^2 .

It is not an unprimeable number, because it can be changed into a prime (1131003221003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 565500611 + ... + 565502610.

Almost surely, 2^{1131003221000} is an apocalyptic number.

1131003221000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131003221000 is an abundant number, since it is smaller than the sum of its proper divisors (1515544318480).

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

1131003221000 is a wasteful number, since it uses less digits than its factorization.

1131003221000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131003242 (or 1131003228 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 1131003221000 its reverse (1223001311), we get a palindrome (1132226222311).

The spelling of 1131003221000 in words is "one trillion, one hundred thirty-one billion, three million, two hundred twenty-one thousand".