21401029301 has 4 divisors (see below), whose sum is σ = 21401381100. Its totient is φ = 21400677504.

The previous prime is 21401029253. The next prime is 21401029337. The reversal of 21401029301 is 10392010412.

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 6955393201 + 14445636100 = 83399^2 + 120190^2 .

It is a cyclic number.

It is not a de Polignac number, because 21401029301 - 2¹⁰ = 21401028277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21401029361) 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, 58556 + ... + 215013.

It is an arithmetic number, because the mean of its divisors is an integer number (5350345275).

Almost surely, 2^21401029301 is an apocalyptic number.

It is an amenable number.

21401029301 is a deficient number, since it is larger than the sum of its proper divisors (351799).

21401029301 is an equidigital number, since it uses as much as digits as its factorization.

21401029301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 351798.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 21401029301 its reverse (10392010412), we get a palindrome (31793039713).

The spelling of 21401029301 in words is "twenty-one billion, four hundred one million, twenty-nine thousand, three hundred one".