1141323212221 has 4 divisors (see below), whose sum is σ = 1141325351100. Its totient is φ = 1141321073344.

The previous prime is 1141323212191. The next prime is 1141323212233. The reversal of 1141323212221 is 1222123231411.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 330756112996 + 810567099225 = 575114^2 + 900315^2 .

It is a cyclic number.

It is not a de Polignac number, because 1141323212221 - 2²¹ = 1141321115069 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 (1141323212261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 461595 + ... + 1579783.

It is an arithmetic number, because the mean of its divisors is an integer number (285331337775).

Almost surely, 2^{1141323212221} is an apocalyptic number.

It is an amenable number.

1141323212221 is a deficient number, since it is larger than the sum of its proper divisors (2138879).

1141323212221 is a wasteful number, since it uses less digits than its factorization.

1141323212221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2138878.

The product of its digits is 1152, while the sum is 25.

Adding to 1141323212221 its reverse (1222123231411), we get a palindrome (2363446443632).

The spelling of 1141323212221 in words is "one trillion, one hundred forty-one billion, three hundred twenty-three million, two hundred twelve thousand, two hundred twenty-one".