1233121 has 2 divisors, whose sum is σ = 1233122.
Its totient is φ = 1233120.
The previous prime is 1233107. The next prime is 1233143. The reversal of 1233121 is 1213321.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 1040400 + 192721 = 1020^2 + 439^2
It is a cyclic number.
It is not a de Polignac number, because 1233121 - 211 = 1231073 is a prime.
It is a Chen prime.
1233121 is a lucky number.
It is not a weakly prime, because it can be changed into another prime (1233101) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 616560 + 616561.
It is an arithmetic number, because the mean of its divisors is an integer number (616561).
21233121 is an apocalyptic number.
It is an amenable number.
1233121 is a deficient number, since it is larger than the sum of its proper divisors (1).
1233121 is an equidigital number, since it uses as much as digits as its factorization.
1233121 is an odious number, because the sum of its binary digits is odd.
The product of its digits is 36, while the sum is 13.
The square root of 1233121 is about 1110.4598146714.
The cubic root of 1233121 is about 107.2346728730.
Adding to 1233121 its reverse (1213321), we get a palindrome (2446442).
It can be divided in two parts, 12 and 33121, that added together give a palindrome (33133).
The spelling of 1233121 in words is "one million, two hundred thirty-three thousand, one hundred twenty-one".