1224121 has 2 divisors, whose sum is σ = 1224122. Its totient is φ = 1224120.

The previous prime is 1224109. The next prime is 1224131. The reversal of 1224121 is 1214221.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 783225 + 440896 = 885^2 + 664^2 .

It is an emirp because it is prime and its reverse (1214221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1224121 - 2⁵ = 1224089 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1224131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612060 + 612061.

It is an arithmetic number, because the mean of its divisors is an integer number (612061).

2^1224121 is an apocalyptic number.

It is an amenable number.

1224121 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224121 is an equidigital number, since it uses as much as digits as its factorization.

1224121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32, while the sum is 13.

The square root of 1224121 is about 1106.4000180766. The cubic root of 1224121 is about 106.9731495792.

Adding to 1224121 its reverse (1214221), we get a palindrome (2438342).

The spelling of 1224121 in words is "one million, two hundred twenty-four thousand, one hundred twenty-one".