10401311211521 has 4 divisors (see below), whose sum is σ = 10402048541232. Its totient is φ = 10400573881812.

The previous prime is 10401311211481. The next prime is 10401311211559. The reversal of 10401311211521 is 12511211310401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 10401311211521 - 2¹⁰ = 10401311210497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10401311211721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 368643695 + ... + 368671908.

It is an arithmetic number, because the mean of its divisors is an integer number (2600512135308).

Almost surely, 2^{10401311211521} is an apocalyptic number.

It is an amenable number.

10401311211521 is a deficient number, since it is larger than the sum of its proper divisors (737329711).

10401311211521 is an equidigital number, since it uses as much as digits as its factorization.

10401311211521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737329710.

The product of its (nonzero) digits is 240, while the sum is 23.

Adding to 10401311211521 its reverse (12511211310401), we get a palindrome (22912522521922).

The spelling of 10401311211521 in words is "ten trillion, four hundred one billion, three hundred eleven million, two hundred eleven thousand, five hundred twenty-one".