22222120771 has 2 divisors, whose sum is σ = 22222120772. Its totient is φ = 22222120770.

The previous prime is 22222120769. The next prime is 22222120819. The reversal of 22222120771 is 17702122222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22222120771 - 2¹ = 22222120769 is a prime.

Together with 22222120769, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (22222120751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11111060385 + 11111060386.

It is an arithmetic number, because the mean of its divisors is an integer number (11111060386).

Almost surely, 2^22222120771 is an apocalyptic number.

22222120771 is a deficient number, since it is larger than the sum of its proper divisors (1).

22222120771 is an equidigital number, since it uses as much as digits as its factorization.

22222120771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3136, while the sum is 28.

Adding to 22222120771 its reverse (17702122222), we get a palindrome (39924242993).

The spelling of 22222120771 in words is "twenty-two billion, two hundred twenty-two million, one hundred twenty thousand, seven hundred seventy-one".