1321424011 has 6 divisors (see below), whose sum is σ = 1365426636. Its totient is φ = 1278796500.

The previous prime is 1321424009. The next prime is 1321424017. The reversal of 1321424011 is 1104241231.

It is not a de Polignac number, because 1321424011 - 2¹ = 1321424009 is a prime.

It is a super-2 number, since 2×1321424011² = 3492322833694656242, which contains 22 as substring.

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 1321424011.

It is not an unprimeable number, because it can be changed into a prime (1321424017) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 686565 + ... + 688486.

It is an arithmetic number, because the mean of its divisors is an integer number (227571106).

Almost surely, 2^1321424011 is an apocalyptic number.

1321424011 is a deficient number, since it is larger than the sum of its proper divisors (44002625).

1321424011 is an equidigital number, since it uses as much as digits as its factorization.

1321424011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1375113 (or 1375082 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 1321424011 is about 36351.3962730457. The cubic root of 1321424011 is about 1097.3556346242.

Adding to 1321424011 its reverse (1104241231), we get a palindrome (2425665242).

The spelling of 1321424011 in words is "one billion, three hundred twenty-one million, four hundred twenty-four thousand, eleven".