1123234021 has 8 divisors (see below), whose sum is σ = 1382441984. Its totient is φ = 888712560.

The previous prime is 1123234009. The next prime is 1123234043. The reversal of 1123234021 is 1204323211.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1123234021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1123234021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123234121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6171525 + ... + 6171706.

It is an arithmetic number, because the mean of its divisors is an integer number (172805248).

Almost surely, 2^1123234021 is an apocalyptic number.

It is an amenable number.

1123234021 is a deficient number, since it is larger than the sum of its proper divisors (259207963).

1123234021 is a wasteful number, since it uses less digits than its factorization.

1123234021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12343251.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1123234021 is about 33514.6836625381. The cubic root of 1123234021 is about 1039.4974214315.

Adding to 1123234021 its reverse (1204323211), we get a palindrome (2327557232).

The spelling of 1123234021 in words is "one billion, one hundred twenty-three million, two hundred thirty-four thousand, twenty-one".