222009947977 has 2 divisors, whose sum is σ = 222009947978. Its totient is φ = 222009947976.

The previous prime is 222009947869. The next prime is 222009947983. The reversal of 222009947977 is 779749900222.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168215639881 + 53794308096 = 410141^2 + 231936^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-222009947977 is a prime.

It is not a weakly prime, because it can be changed into another prime (222009947477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111004973988 + 111004973989.

It is an arithmetic number, because the mean of its divisors is an integer number (111004973989).

Almost surely, 2^222009947977 is an apocalyptic number.

It is an amenable number.

222009947977 is a deficient number, since it is larger than the sum of its proper divisors (1).

222009947977 is an equidigital number, since it uses as much as digits as its factorization.

222009947977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8001504, while the sum is 58.

The spelling of 222009947977 in words is "two hundred twenty-two billion, nine million, nine hundred forty-seven thousand, nine hundred seventy-seven".