1130021321221 has 4 divisors (see below), whose sum is σ = 1216946038252. Its totient is φ = 1043096604192.

The previous prime is 1130021321171. The next prime is 1130021321243. The reversal of 1130021321221 is 1221231200311.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 189342468225 + 940678852996 = 435135^2 + 969886^2 .

It is a cyclic number.

It is not a de Polignac number, because 1130021321221 - 2¹¹ = 1130021319173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1130021321251) 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 3 ways as a sum of consecutive naturals, for example, 43462358496 + ... + 43462358521.

It is an arithmetic number, because the mean of its divisors is an integer number (304236509563).

Almost surely, 2^{1130021321221} is an apocalyptic number.

It is an amenable number.

1130021321221 is a deficient number, since it is larger than the sum of its proper divisors (86924717031).

1130021321221 is an equidigital number, since it uses as much as digits as its factorization.

1130021321221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86924717030.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1130021321221 its reverse (1221231200311), we get a palindrome (2351252521532).

The spelling of 1130021321221 in words is "one trillion, one hundred thirty billion, twenty-one million, three hundred twenty-one thousand, two hundred twenty-one".