20000121241201 has 2 divisors, whose sum is σ = 20000121241202. Its totient is φ = 20000121241200.

The previous prime is 20000121241193. The next prime is 20000121241291. The reversal of 20000121241201 is 10214212100002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19564910554176 + 435210687025 = 4423224^2 + 659705^2 .

It is a cyclic number.

It is not a de Polignac number, because 20000121241201 - 2³ = 20000121241193 is a prime.

It is not a weakly prime, because it can be changed into another prime (20000121241291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000060620600 + 10000060620601.

It is an arithmetic number, because the mean of its divisors is an integer number (10000060620601).

Almost surely, 2^{20000121241201} is an apocalyptic number.

It is an amenable number.

20000121241201 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000121241201 is an equidigital number, since it uses as much as digits as its factorization.

20000121241201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20000121241201 its reverse (10214212100002), we get a palindrome (30214333341203).

The spelling of 20000121241201 in words is "twenty trillion, one hundred twenty-one million, two hundred forty-one thousand, two hundred one".