20354776220201 has 2 divisors, whose sum is σ = 20354776220202. Its totient is φ = 20354776220200.

The previous prime is 20354776220197. The next prime is 20354776220293. The reversal of 20354776220201 is 10202267745302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16497008845801 + 3857767374400 = 4061651^2 + 1964120^2 .

It is a cyclic number.

It is not a de Polignac number, because 20354776220201 - 2² = 20354776220197 is a prime.

It is not a weakly prime, because it can be changed into another prime (20354776228201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177388110100 + 10177388110101.

It is an arithmetic number, because the mean of its divisors is an integer number (10177388110101).

Almost surely, 2^{20354776220201} is an apocalyptic number.

It is an amenable number.

20354776220201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354776220201 is an equidigital number, since it uses as much as digits as its factorization.

20354776220201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 41.

The spelling of 20354776220201 in words is "twenty trillion, three hundred fifty-four billion, seven hundred seventy-six million, two hundred twenty thousand, two hundred one".