11420001321 has 16 divisors (see below), whose sum is σ = 15788156160. Its totient is φ = 7333804800.

The previous prime is 11420001317. The next prime is 11420001343. The reversal of 11420001321 is 12310002411.

It is not a de Polignac number, because 11420001321 - 2² = 11420001317 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11420001321.

It is not an unprimeable number, because it can be changed into a prime (11420001301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 113905 + ... + 189246.

It is an arithmetic number, because the mean of its divisors is an integer number (986759760).

Almost surely, 2^11420001321 is an apocalyptic number.

It is an amenable number.

11420001321 is a deficient number, since it is larger than the sum of its proper divisors (4368154839).

11420001321 is a wasteful number, since it uses less digits than its factorization.

11420001321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303616.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 11420001321 its reverse (12310002411), we get a palindrome (23730003732).

The spelling of 11420001321 in words is "eleven billion, four hundred twenty million, one thousand, three hundred twenty-one".