21222022110077 has 2 divisors, whose sum is σ = 21222022110078. Its totient is φ = 21222022110076.

The previous prime is 21222022110061. The next prime is 21222022110097. The reversal of 21222022110077 is 77001122022212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13063121118436 + 8158900991641 = 3614294^2 + 2856379^2 .

It is a cyclic number.

It is not a de Polignac number, because 21222022110077 - 2⁴ = 21222022110061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222022110097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611011055038 + 10611011055039.

It is an arithmetic number, because the mean of its divisors is an integer number (10611011055039).

Almost surely, 2^{21222022110077} is an apocalyptic number.

It is an amenable number.

21222022110077 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222022110077 is an equidigital number, since it uses as much as digits as its factorization.

21222022110077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 29.

Adding to 21222022110077 its reverse (77001122022212), we get a palindrome (98223144132289).

The spelling of 21222022110077 in words is "twenty-one trillion, two hundred twenty-two billion, twenty-two million, one hundred ten thousand, seventy-seven".