200212020126121 has 2 divisors, whose sum is σ = 200212020126122. Its totient is φ = 200212020126120.

The previous prime is 200212020126077. The next prime is 200212020126133. The reversal of 200212020126121 is 121621020212002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 188457846720025 + 11754173406096 = 13727995^2 + 3428436^2 .

It is a cyclic number.

It is not a de Polignac number, because 200212020126121 - 2²¹ = 200212018028969 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 200212020126092 and 200212020126101.

It is not a weakly prime, because it can be changed into another prime (200212020126821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100106010063060 + 100106010063061.

It is an arithmetic number, because the mean of its divisors is an integer number (100106010063061).

Almost surely, 2^{200212020126121} is an apocalyptic number.

It is an amenable number.

200212020126121 is a deficient number, since it is larger than the sum of its proper divisors (1).

200212020126121 is an equidigital number, since it uses as much as digits as its factorization.

200212020126121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 200212020126121 its reverse (121621020212002), we get a palindrome (321833040338123).

The spelling of 200212020126121 in words is "two hundred trillion, two hundred twelve billion, twenty million, one hundred twenty-six thousand, one hundred twenty-one".