1321211241 has 48 divisors (see below), whose sum is σ = 2281353984. Its totient is φ = 720415872.

The previous prime is 1321211237. The next prime is 1321211251. The reversal of 1321211241 is 1421121231.

It is not a de Polignac number, because 1321211241 - 2² = 1321211237 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321211201) 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 in 47 ways as a sum of consecutive naturals, for example, 806275 + ... + 807911.

It is an arithmetic number, because the mean of its divisors is an integer number (47528208).

Almost surely, 2^1321211241 is an apocalyptic number.

It is an amenable number.

1321211241 is a deficient number, since it is larger than the sum of its proper divisors (960142743).

1321211241 is a wasteful number, since it uses less digits than its factorization.

1321211241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2230 (or 2227 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 1321211241 is about 36348.4695826386. The cubic root of 1321211241 is about 1097.2967343043.

Adding to 1321211241 its reverse (1421121231), we get a palindrome (2742332472).

The spelling of 1321211241 in words is "one billion, three hundred twenty-one million, two hundred eleven thousand, two hundred forty-one".