1211342224 has 10 divisors (see below), whose sum is σ = 2346975590. Its totient is φ = 605671104.

The previous prime is 1211342221. The next prime is 1211342227. The reversal of 1211342224 is 4222431121.

It is an interprime number because it is at equal distance from previous prime (1211342221) and next prime (1211342227).

It can be written as a sum of positive squares in only one way, i.e., 895924624 + 315417600 = 29932^2 + 17760^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1211342195 and 1211342204.

It is not an unprimeable number, because it can be changed into a prime (1211342221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37854429 + ... + 37854460.

It is an arithmetic number, because the mean of its divisors is an integer number (234697559).

Almost surely, 2^1211342224 is an apocalyptic number.

It is an amenable number.

1211342224 is a deficient number, since it is larger than the sum of its proper divisors (1135633366).

1211342224 is an equidigital number, since it uses as much as digits as its factorization.

1211342224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75708897 (or 75708891 counting only the distinct ones).

The product of its digits is 768, while the sum is 22.

The square root of 1211342224 is about 34804.3420279712. The cubic root of 1211342224 is about 1065.9961068396.

Adding to 1211342224 its reverse (4222431121), we get a palindrome (5433773345).

The spelling of 1211342224 in words is "one billion, two hundred eleven million, three hundred forty-two thousand, two hundred twenty-four".