1321211 has 6 divisors (see below), whose sum is σ = 1369212. Its totient is φ = 1274840.

The previous prime is 1321193. The next prime is 1321213. The reversal of 1321211 is 1121231.

It is not a de Polignac number, because 1321211 - 2¹⁸ = 1059067 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1321192 and 1321201.

It is not an unprimeable number, because it can be changed into a prime (1321213) 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 in 5 ways as a sum of consecutive naturals, for example, 56 + ... + 1626.

It is an arithmetic number, because the mean of its divisors is an integer number (228202).

2^1321211 is an apocalyptic number.

1321211 is a deficient number, since it is larger than the sum of its proper divisors (48001).

1321211 is an equidigital number, since it uses as much as digits as its factorization.

1321211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1629 (or 1600 counting only the distinct ones).

The product of its digits is 12, while the sum is 11.

The square root of 1321211 is about 1149.4394285912. The cubic root of 1321211 is about 109.7296667586.

Adding to 1321211 its reverse (1121231), we get a palindrome (2442442).

The spelling of 1321211 in words is "one million, three hundred twenty-one thousand, two hundred eleven".