21401025301 has 2 divisors, whose sum is σ = 21401025302. Its totient is φ = 21401025300.

The previous prime is 21401025287. The next prime is 21401025353. The reversal of 21401025301 is 10352010412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16633260900 + 4767764401 = 128970^2 + 69049^2 .

It is a cyclic number.

It is not a de Polignac number, because 21401025301 - 2⁹ = 21401024789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21401025001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700512650 + 10700512651.

It is an arithmetic number, because the mean of its divisors is an integer number (10700512651).

Almost surely, 2^21401025301 is an apocalyptic number.

It is an amenable number.

21401025301 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401025301 is an equidigital number, since it uses as much as digits as its factorization.

21401025301 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21401025301 its reverse (10352010412), we get a palindrome (31753035713).

The spelling of 21401025301 in words is "twenty-one billion, four hundred one million, twenty-five thousand, three hundred one".