121000200220121 has 2 divisors, whose sum is σ = 121000200220122. Its totient is φ = 121000200220120.

The previous prime is 121000200220111. The next prime is 121000200220171. The reversal of 121000200220121 is 121022002000121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120263244931600 + 736955288521 = 10966460^2 + 858461^2 .

It is a cyclic number.

It is not a de Polignac number, because 121000200220121 - 2¹⁰ = 121000200219097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121000200220096 and 121000200220105.

It is not a weakly prime, because it can be changed into another prime (121000200220111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500100110060 + 60500100110061.

It is an arithmetic number, because the mean of its divisors is an integer number (60500100110061).

Almost surely, 2^{121000200220121} is an apocalyptic number.

It is an amenable number.

121000200220121 is a deficient number, since it is larger than the sum of its proper divisors (1).

121000200220121 is an equidigital number, since it uses as much as digits as its factorization.

121000200220121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121000200220121 its reverse (121022002000121), we get a palindrome (242022202220242).

The spelling of 121000200220121 in words is "one hundred twenty-one trillion, two hundred million, two hundred twenty thousand, one hundred twenty-one".