20222220099979 has 2 divisors, whose sum is σ = 20222220099980. Its totient is φ = 20222220099978.

The previous prime is 20222220099971. The next prime is 20222220100031. The reversal of 20222220099979 is 97999002222202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20222220099979 - 2³ = 20222220099971 is a prime.

It is not a weakly prime, because it can be changed into another prime (20222220099971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10111110049989 + 10111110049990.

It is an arithmetic number, because the mean of its divisors is an integer number (10111110049990).

Almost surely, 2^{20222220099979} is an apocalyptic number.

20222220099979 is a deficient number, since it is larger than the sum of its proper divisors (1).

20222220099979 is an equidigital number, since it uses as much as digits as its factorization.

20222220099979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2939328, while the sum is 55.

The spelling of 20222220099979 in words is "twenty trillion, two hundred twenty-two billion, two hundred twenty million, ninety-nine thousand, nine hundred seventy-nine".