1321042211 has 8 divisors (see below), whose sum is σ = 1325392848. Its totient is φ = 1316700000.

The previous prime is 1321042201. The next prime is 1321042213. The reversal of 1321042211 is 1122401231.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1321042211 - 2¹⁸ = 1320780067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1321042211.

It is not an unprimeable number, because it can be changed into a prime (1321042213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461936 + ... + 464786.

It is an arithmetic number, because the mean of its divisors is an integer number (165674106).

Almost surely, 2^1321042211 is an apocalyptic number.

1321042211 is a deficient number, since it is larger than the sum of its proper divisors (4350637).

1321042211 is an equidigital number, since it uses as much as digits as its factorization.

1321042211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4213.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1321042211 is about 36346.1443759857. The cubic root of 1321042211 is about 1097.2499378569.

Adding to 1321042211 its reverse (1122401231), we get a palindrome (2443443442).

The spelling of 1321042211 in words is "one billion, three hundred twenty-one million, forty-two thousand, two hundred eleven".