21310110223013 has 2 divisors, whose sum is σ = 21310110223014. Its totient is φ = 21310110223012.

The previous prime is 21310110222977. The next prime is 21310110223019. The reversal of 21310110223013 is 31032201101312.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15888211944004 + 5421898279009 = 3986002^2 + 2328497^2 .

It is a cyclic number.

It is not a de Polignac number, because 21310110223013 - 2⁸ = 21310110222757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21310110223019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10655055111506 + 10655055111507.

It is an arithmetic number, because the mean of its divisors is an integer number (10655055111507).

Almost surely, 2^{21310110223013} is an apocalyptic number.

It is an amenable number.

21310110223013 is a deficient number, since it is larger than the sum of its proper divisors (1).

21310110223013 is an equidigital number, since it uses as much as digits as its factorization.

21310110223013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21310110223013 its reverse (31032201101312), we get a palindrome (52342311324325).

The spelling of 21310110223013 in words is "twenty-one trillion, three hundred ten billion, one hundred ten million, two hundred twenty-three thousand, thirteen".