21422200212289 has 2 divisors, whose sum is σ = 21422200212290. Its totient is φ = 21422200212288.

The previous prime is 21422200212271. The next prime is 21422200212331. The reversal of 21422200212289 is 98221200222412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18631162202689 + 2791038009600 = 4316383^2 + 1670640^2 .

It is a cyclic number.

It is not a de Polignac number, because 21422200212289 - 2¹⁵ = 21422200179521 is a prime.

It is not a weakly prime, because it can be changed into another prime (21422200212239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711100106144 + 10711100106145.

It is an arithmetic number, because the mean of its divisors is an integer number (10711100106145).

Almost surely, 2^{21422200212289} is an apocalyptic number.

It is an amenable number.

21422200212289 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422200212289 is an equidigital number, since it uses as much as digits as its factorization.

21422200212289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 21422200212289 in words is "twenty-one trillion, four hundred twenty-two billion, two hundred million, two hundred twelve thousand, two hundred eighty-nine".