1123332021 has 24 divisors (see below), whose sum is σ = 1863823104. Its totient is φ = 638638560.

The previous prime is 1123331977. The next prime is 1123332031. The reversal of 1123332021 is 1202333211.

It is not a de Polignac number, because 1123332021 - 2²⁵ = 1089777589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1123331985 and 1123332003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123332031) 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, 32845 + ... + 57666.

It is an arithmetic number, because the mean of its divisors is an integer number (77659296).

Almost surely, 2^1123332021 is an apocalyptic number.

It is an amenable number.

1123332021 is a deficient number, since it is larger than the sum of its proper divisors (740491083).

1123332021 is a wasteful number, since it uses less digits than its factorization.

1123332021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90721 (or 90718 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 1123332021 is about 33516.1456763751. The cubic root of 1123332021 is about 1039.5276519335.

Adding to 1123332021 its reverse (1202333211), we get a palindrome (2325665232).

The spelling of 1123332021 in words is "one billion, one hundred twenty-three million, three hundred thirty-two thousand, twenty-one".