1224131 has 2 divisors, whose sum is σ = 1224132. Its totient is φ = 1224130.

The previous prime is 1224121. The next prime is 1224133. The reversal of 1224131 is 1314221.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1224131 is a prime.

It is a super-2 number, since 2×1224131² = 2996993410322, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 1224133, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1224133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 612065 + 612066.

It is an arithmetic number, because the mean of its divisors is an integer number (612066).

2^1224131 is an apocalyptic number.

1224131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1224131 is an equidigital number, since it uses as much as digits as its factorization.

1224131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48, while the sum is 14.

The square root of 1224131 is about 1106.4045372286. The cubic root of 1224131 is about 106.9734408708.

Adding to 1224131 its reverse (1314221), we get a palindrome (2538352).

The spelling of 1224131 in words is "one million, two hundred twenty-four thousand, one hundred thirty-one".