1131030321021 has 24 divisors (see below), whose sum is σ = 1638054263040. Its totient is φ = 752017010976.

The previous prime is 1131030321011. The next prime is 1131030321067. The reversal of 1131030321021 is 1201230301311.

1131030321021 is a `hidden beast` number, since 1 + 1 + 310 + 30 + 321 + 0 + 2 + 1 = 666.

It is not a de Polignac number, because 1131030321021 - 2⁶ = 1131030320957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1131030320985 and 1131030321003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131030321011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8429955 + ... + 8563071.

It is an arithmetic number, because the mean of its divisors is an integer number (68252260960).

Almost surely, 2^{1131030321021} is an apocalyptic number.

It is an amenable number.

1131030321021 is a deficient number, since it is larger than the sum of its proper divisors (507023942019).

1131030321021 is a wasteful number, since it uses less digits than its factorization.

1131030321021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135625 (or 135622 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1131030321021 its reverse (1201230301311), we get a palindrome (2332260622332).

The spelling of 1131030321021 in words is "one trillion, one hundred thirty-one billion, thirty million, three hundred twenty-one thousand, twenty-one".