21111302113001 has 2 divisors, whose sum is σ = 21111302113002. Its totient is φ = 21111302113000.

The previous prime is 21111302112977. The next prime is 21111302113067. The reversal of 21111302113001 is 10031120311112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19267043051776 + 1844259061225 = 4389424^2 + 1358035^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21111302113001 is a prime.

It is not a weakly prime, because it can be changed into another prime (21111302113901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555651056500 + 10555651056501.

It is an arithmetic number, because the mean of its divisors is an integer number (10555651056501).

Almost surely, 2^{21111302113001} is an apocalyptic number.

It is an amenable number.

21111302113001 is a deficient number, since it is larger than the sum of its proper divisors (1).

21111302113001 is an equidigital number, since it uses as much as digits as its factorization.

21111302113001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 17.

Adding to 21111302113001 its reverse (10031120311112), we get a palindrome (31142422424113).

The spelling of 21111302113001 in words is "twenty-one trillion, one hundred eleven billion, three hundred two million, one hundred thirteen thousand, one".