1321132011 has 8 divisors (see below), whose sum is σ = 1768880640. Its totient is φ = 877069032.

The previous prime is 1321131989. The next prime is 1321132037. The reversal of 1321132011 is 1102311231.

It is a happy number.

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

It is not a de Polignac number, because 1321132011 - 2¹⁷ = 1321000939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1321132061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 920575 + ... + 922008.

It is an arithmetic number, because the mean of its divisors is an integer number (221110080).

Almost surely, 2^1321132011 is an apocalyptic number.

1321132011 is a deficient number, since it is larger than the sum of its proper divisors (447748629).

1321132011 is a wasteful number, since it uses less digits than its factorization.

1321132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1842825.

The product of its (nonzero) digits is 36, while the sum is 15.

The square root of 1321132011 is about 36347.3796992300. The cubic root of 1321132011 is about 1097.2747997452.

Adding to 1321132011 its reverse (1102311231), we get a palindrome (2423443242).

The spelling of 1321132011 in words is "one billion, three hundred twenty-one million, one hundred thirty-two thousand, eleven".