21222022093 has 2 divisors, whose sum is σ = 21222022094. Its totient is φ = 21222022092.

The previous prime is 21222022091. The next prime is 21222022123. The reversal of 21222022093 is 39022022212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14303442409 + 6918579684 = 119597^2 + 83178^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222022093 - 2¹ = 21222022091 is a prime.

Together with 21222022091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222022091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611011046 + 10611011047.

It is an arithmetic number, because the mean of its divisors is an integer number (10611011047).

Almost surely, 2^21222022093 is an apocalyptic number.

It is an amenable number.

21222022093 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222022093 is an equidigital number, since it uses as much as digits as its factorization.

21222022093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The spelling of 21222022093 in words is "twenty-one billion, two hundred twenty-two million, twenty-two thousand, ninety-three".