20222222988977 has 2 divisors, whose sum is σ = 20222222988978. Its totient is φ = 20222222988976.

The previous prime is 20222222988967. The next prime is 20222222988983. The reversal of 20222222988977 is 77988922222202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19609699184656 + 612523804321 = 4428284^2 + 782639^2 .

It is a cyclic number.

It is not a de Polignac number, because 20222222988977 - 2¹⁴ = 20222222972593 is a prime.

It is not a weakly prime, because it can be changed into another prime (20222222988917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111111494488 + 10111111494489.

It is an arithmetic number, because the mean of its divisors is an integer number (10111111494489).

Almost surely, 2^{20222222988977} is an apocalyptic number.

It is an amenable number.

20222222988977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222222988977 is an equidigital number, since it uses as much as digits as its factorization.

20222222988977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32514048, while the sum is 62.

The spelling of 20222222988977 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty-two million, nine hundred eighty-eight thousand, nine hundred seventy-seven".