20112179 has 2 divisors, whose sum is σ = 20112180. Its totient is φ = 20112178.

The previous prime is 20112151. The next prime is 20112199. The reversal of 20112179 is 97121102.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20112179 - 2¹² = 20108083 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20112119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056089 + 10056090.

It is an arithmetic number, because the mean of its divisors is an integer number (10056090).

Almost surely, 2^20112179 is an apocalyptic number.

20112179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20112179 is an equidigital number, since it uses as much as digits as its factorization.

20112179 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 252, while the sum is 23.

The square root of 20112179 is about 4484.6604107781. The cubic root of 20112179 is about 271.9483168454.

The spelling of 20112179 in words is "twenty million, one hundred twelve thousand, one hundred seventy-nine".