200121000179 has 2 divisors, whose sum is σ = 200121000180. Its totient is φ = 200121000178.

The previous prime is 200121000169. The next prime is 200121000193. The reversal of 200121000179 is 971000121002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200121000179 - 2²⁴ = 200104222963 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (200121000119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100060500089 + 100060500090.

It is an arithmetic number, because the mean of its divisors is an integer number (100060500090).

Almost surely, 2^200121000179 is an apocalyptic number.

200121000179 is a deficient number, since it is larger than the sum of its proper divisors (1).

200121000179 is an equidigital number, since it uses as much as digits as its factorization.

200121000179 is an evil number, because the sum of its binary digits is even.

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

The spelling of 200121000179 in words is "two hundred billion, one hundred twenty-one million, one hundred seventy-nine", and thus it is an aban number.