21401101013 has 2 divisors, whose sum is σ = 21401101014. Its totient is φ = 21401101012.

The previous prime is 21401100967. The next prime is 21401101063. The reversal of 21401101013 is 31010110412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12047696644 + 9353404369 = 109762^2 + 96713^2 .

It is a cyclic number.

It is not a de Polignac number, because 21401101013 - 2⁸ = 21401100757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21401101063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10700550506 + 10700550507.

It is an arithmetic number, because the mean of its divisors is an integer number (10700550507).

Almost surely, 2^21401101013 is an apocalyptic number.

It is an amenable number.

21401101013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21401101013 is an equidigital number, since it uses as much as digits as its factorization.

21401101013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 21401101013 its reverse (31010110412), we get a palindrome (52411211425).

The spelling of 21401101013 in words is "twenty-one billion, four hundred one million, one hundred one thousand, thirteen".