20111111022179 has 2 divisors, whose sum is σ = 20111111022180. Its totient is φ = 20111111022178.

The previous prime is 20111111022029. The next prime is 20111111022181. The reversal of 20111111022179 is 97122011111102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20111111022179 - 2³² = 20106816054883 is a prime.

Together with 20111111022181, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20111111027179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10055555511089 + 10055555511090.

It is an arithmetic number, because the mean of its divisors is an integer number (10055555511090).

Almost surely, 2^{20111111022179} is an apocalyptic number.

20111111022179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20111111022179 is an equidigital number, since it uses as much as digits as its factorization.

20111111022179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 504, while the sum is 29.

The spelling of 20111111022179 in words is "twenty trillion, one hundred eleven billion, one hundred eleven million, twenty-two thousand, one hundred seventy-nine".