11512321401 has 8 divisors (see below), whose sum is σ = 17542585024. Its totient is φ = 6578469360.

The previous prime is 11512321397. The next prime is 11512321411. The reversal of 11512321401 is 10412321511.

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

It is not a de Polignac number, because 11512321401 - 2² = 11512321397 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 548205781 = 11512321401 / (1 + 1 + 5 + 1 + 2 + 3 + 2 + 1 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11512321411) 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, 274102870 + ... + 274102911.

It is an arithmetic number, because the mean of its divisors is an integer number (2192823128).

Almost surely, 2^11512321401 is an apocalyptic number.

It is an amenable number.

11512321401 is a deficient number, since it is larger than the sum of its proper divisors (6030263623).

11512321401 is an equidigital number, since it uses as much as digits as its factorization.

11512321401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548205791.

The product of its (nonzero) digits is 240, while the sum is 21.

Adding to 11512321401 its reverse (10412321511), we get a palindrome (21924642912).

The spelling of 11512321401 in words is "eleven billion, five hundred twelve million, three hundred twenty-one thousand, four hundred one".