21950389296113 has 2 divisors, whose sum is σ = 21950389296114. Its totient is φ = 21950389296112.

The previous prime is 21950389296019. The next prime is 21950389296131. The reversal of 21950389296113 is 31169298305912.

It is a happy number.

Together with next prime (21950389296131) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11538202684849 + 10412186611264 = 3396793^2 + 3226792^2 .

It is a cyclic number.

It is not a de Polignac number, because 21950389296113 - 2¹⁰ = 21950389295089 is a prime.

It is not a weakly prime, because it can be changed into another prime (21950383296113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10975194648056 + 10975194648057.

It is an arithmetic number, because the mean of its divisors is an integer number (10975194648057).

Almost surely, 2^{21950389296113} is an apocalyptic number.

It is an amenable number.

21950389296113 is a deficient number, since it is larger than the sum of its proper divisors (1).

21950389296113 is an equidigital number, since it uses as much as digits as its factorization.

21950389296113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6298560, while the sum is 59.

The spelling of 21950389296113 in words is "twenty-one trillion, nine hundred fifty billion, three hundred eighty-nine million, two hundred ninety-six thousand, one hundred thirteen".