21401030401 has 4 divisors (see below), whose sum is σ = 21671929600. Its totient is φ = 21130131204.

The previous prime is 21401030381. The next prime is 21401030459. The reversal of 21401030401 is 10403010412.

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 21401030401 - 2⁵ = 21401030369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21401070401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135449481 + ... + 135449638.

It is an arithmetic number, because the mean of its divisors is an integer number (5417982400).

Almost surely, 2^21401030401 is an apocalyptic number.

It is an amenable number.

21401030401 is a deficient number, since it is larger than the sum of its proper divisors (270899199).

21401030401 is an equidigital number, since it uses as much as digits as its factorization.

21401030401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270899198.

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 21401030401 its reverse (10403010412), we get a palindrome (31804040813).

The spelling of 21401030401 in words is "twenty-one billion, four hundred one million, thirty thousand, four hundred one".