1321132211 has 8 divisors (see below), whose sum is σ = 1523718240. Its totient is φ = 1122009408.

The previous prime is 1321132199. The next prime is 1321132229. The reversal of 1321132211 is 1122311231.

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 1321132211 - 2²² = 1316937907 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 1321132211.

It is not an unprimeable number, because it can be changed into a prime (1321132261) 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, 864986 + ... + 866511.

It is an arithmetic number, because the mean of its divisors is an integer number (190464780).

Almost surely, 2^1321132211 is an apocalyptic number.

1321132211 is a deficient number, since it is larger than the sum of its proper divisors (202586029).

1321132211 is a wasteful number, since it uses less digits than its factorization.

1321132211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1731613.

The product of its digits is 72, while the sum is 17.

The square root of 1321132211 is about 36347.3824504599. The cubic root of 1321132211 is about 1097.2748551156.

Adding to 1321132211 its reverse (1122311231), we get a palindrome (2443443442).

The spelling of 1321132211 in words is "one billion, three hundred twenty-one million, one hundred thirty-two thousand, two hundred eleven".