1141221423 has 4 divisors (see below), whose sum is σ = 1521628568. Its totient is φ = 760814280.

The previous prime is 1141221421. The next prime is 1141221467. The reversal of 1141221423 is 3241221411.

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

It is not a de Polignac number, because 1141221423 - 2¹ = 1141221421 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1141221423.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141221421) 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, 190203568 + ... + 190203573.

It is an arithmetic number, because the mean of its divisors is an integer number (380407142).

Almost surely, 2^1141221423 is an apocalyptic number.

1141221423 is a deficient number, since it is larger than the sum of its proper divisors (380407145).

1141221423 is an equidigital number, since it uses as much as digits as its factorization.

1141221423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380407144.

The product of its digits is 384, while the sum is 21.

The square root of 1141221423 is about 33781.9689035438. The cubic root of 1141221423 is about 1045.0168790723.

Adding to 1141221423 its reverse (3241221411), we get a palindrome (4382442834).

The spelling of 1141221423 in words is "one billion, one hundred forty-one million, two hundred twenty-one thousand, four hundred twenty-three".