1141020321 has 24 divisors (see below), whose sum is σ = 1774925280. Its totient is φ = 650103552.

The previous prime is 1141020313. The next prime is 1141020337. The reversal of 1141020321 is 1230201411.

It is not a de Polignac number, because 1141020321 - 2³ = 1141020313 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1141020321.

It is not an unprimeable number, because it can be changed into a prime (1141020521) 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, 39825 + ... + 62193.

It is an arithmetic number, because the mean of its divisors is an integer number (73955220).

Almost surely, 2^1141020321 is an apocalyptic number.

It is an amenable number.

1141020321 is a deficient number, since it is larger than the sum of its proper divisors (633904959).

1141020321 is a wasteful number, since it uses less digits than its factorization.

1141020321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22733 (or 22726 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 1141020321 is about 33778.9923029092. The cubic root of 1141020321 is about 1044.9554924078.

Adding to 1141020321 its reverse (1230201411), we get a palindrome (2371221732).

The spelling of 1141020321 in words is "one billion, one hundred forty-one million, twenty thousand, three hundred twenty-one".