22216506077 has 2 divisors, whose sum is σ = 22216506078. Its totient is φ = 22216506076.

The previous prime is 22216506073. The next prime is 22216506089. The reversal of 22216506077 is 77060561222.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20194115236 + 2022390841 = 142106^2 + 44971^2 .

It is a cyclic number.

It is not a de Polignac number, because 22216506077 - 2² = 22216506073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22216506077.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22216506073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11108253038 + 11108253039.

It is an arithmetic number, because the mean of its divisors is an integer number (11108253039).

Almost surely, 2^22216506077 is an apocalyptic number.

It is an amenable number.

22216506077 is a deficient number, since it is larger than the sum of its proper divisors (1).

22216506077 is an equidigital number, since it uses as much as digits as its factorization.

22216506077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 22216506077 in words is "twenty-two billion, two hundred sixteen million, five hundred six thousand, seventy-seven".