10100401321 has 4 divisors (see below), whose sum is σ = 10100792772. Its totient is φ = 10100009872.

The previous prime is 10100401319. The next prime is 10100401327. The reversal of 10100401321 is 12310400101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6389764096 + 3710637225 = 79936^2 + 60915^2 .

It is a cyclic number.

It is not a de Polignac number, because 10100401321 - 2¹ = 10100401319 is a prime.

It is a super-5 number, since 5×10100401321⁵ (a number of 51 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10100401327) 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, 154066 + ... + 209611.

It is an arithmetic number, because the mean of its divisors is an integer number (2525198193).

Almost surely, 2^10100401321 is an apocalyptic number.

It is an amenable number.

10100401321 is a deficient number, since it is larger than the sum of its proper divisors (391451).

10100401321 is an equidigital number, since it uses as much as digits as its factorization.

10100401321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391450.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10100401321 its reverse (12310400101), we get a palindrome (22410801422).

The spelling of 10100401321 in words is "ten billion, one hundred million, four hundred one thousand, three hundred twenty-one".