20212111220179 has 2 divisors, whose sum is σ = 20212111220180. Its totient is φ = 20212111220178.

The previous prime is 20212111220101. The next prime is 20212111220299. The reversal of 20212111220179 is 97102211121202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20212111220179 - 2⁹ = 20212111219667 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20212111220179.

It is not a weakly prime, because it can be changed into another prime (20212111221179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106055610089 + 10106055610090.

It is an arithmetic number, because the mean of its divisors is an integer number (10106055610090).

Almost surely, 2^{20212111220179} is an apocalyptic number.

20212111220179 is a deficient number, since it is larger than the sum of its proper divisors (1).

20212111220179 is an equidigital number, since it uses as much as digits as its factorization.

20212111220179 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 31.

The spelling of 20212111220179 in words is "twenty trillion, two hundred twelve billion, one hundred eleven million, two hundred twenty thousand, one hundred seventy-nine".