1141123021 has 4 divisors (see below), whose sum is σ = 1141467712. Its totient is φ = 1140778332.

The previous prime is 1141123013. The next prime is 1141123037. The reversal of 1141123021 is 1203211411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1203211411 = 4463 ⋅269597.

It is a cyclic number.

It is not a de Polignac number, because 1141123021 - 2³ = 1141123013 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1141122986 and 1141123004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141123421) 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, 167331 + ... + 174016.

It is an arithmetic number, because the mean of its divisors is an integer number (285366928).

Almost surely, 2^1141123021 is an apocalyptic number.

It is an amenable number.

1141123021 is a deficient number, since it is larger than the sum of its proper divisors (344691).

1141123021 is an equidigital number, since it uses as much as digits as its factorization.

1141123021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344690.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 1141123021 is about 33780.5124443073. The cubic root of 1141123021 is about 1044.9868426264.

Adding to 1141123021 its reverse (1203211411), we get a palindrome (2344334432).

The spelling of 1141123021 in words is "one billion, one hundred forty-one million, one hundred twenty-three thousand, twenty-one".