1123021 has 8 divisors (see below), whose sum is σ = 1183104. Its totient is φ = 1063920.

The previous prime is 1122997. The next prime is 1123051. The reversal of 1123021 is 1203211.

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

It is a cyclic number.

It is not a de Polignac number, because 1123021 - 2¹³ = 1114829 is a prime.

It is a super-2 number, since 2×1123021² = 2522352332882, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a junction number, because it is equal to n+sod(n) for n = 1122989 and 1123007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123051) 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, 3456 + ... + 3766.

It is an arithmetic number, because the mean of its divisors is an integer number (147888).

2^1123021 is an apocalyptic number.

It is an amenable number.

1123021 is a deficient number, since it is larger than the sum of its proper divisors (60083).

1123021 is a wasteful number, since it uses less digits than its factorization.

1123021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 491.

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 1123021 is about 1059.7268515990. The cubic root of 1123021 is about 103.9431703817.

Adding to 1123021 its reverse (1203211), we get a palindrome (2326232).

It can be divided in two parts, 11 and 23021, that added together give a palindrome (23032).

The spelling of 1123021 in words is "one million, one hundred twenty-three thousand, twenty-one".